tests: Removed test-progs/pthread
The Pthread source is now found in gem5-resources: https://gem5.googlesource.com/public/gem5-resources/+/refs/heads/master/src/pthreads The pre-compiled binaries are pulled from dist.gem5.org. There is no reason to keep these here. They are therefore being removed. Change-Id: Id07dc72c62d19920fb304eea505deaa9ebc5599f Reviewed-on: https://gem5-review.googlesource.com/c/public/gem5/+/33141 Reviewed-by: Jason Lowe-Power <power.jg@gmail.com> Maintainer: Jason Lowe-Power <power.jg@gmail.com> Tested-by: kokoro <noreply+kokoro@google.com>
This commit is contained in:
@@ -1,39 +0,0 @@
|
||||
# Copyright (c) 2019 ARM Limited
|
||||
# All rights reserved.
|
||||
#
|
||||
# The license below extends only to copyright in the software and shall
|
||||
# not be construed as granting a license to any other intellectual
|
||||
# property including but not limited to intellectual property relating
|
||||
# to a hardware implementation of the functionality of the software
|
||||
# licensed hereunder. You may use the software subject to the license
|
||||
# terms below provided that you ensure that this notice is replicated
|
||||
# unmodified and in its entirety in all distributions of the software,
|
||||
# modified or unmodified, in source code or in binary form.
|
||||
#
|
||||
# Redistribution and use in source and binary forms, with or without
|
||||
# modification, are permitted provided that the following conditions are
|
||||
# met: redistributions of source code must retain the above copyright
|
||||
# notice, this list of conditions and the following disclaimer;
|
||||
# redistributions in binary form must reproduce the above copyright
|
||||
# notice, this list of conditions and the following disclaimer in the
|
||||
# documentation and/or other materials provided with the distribution;
|
||||
# neither the name of the copyright holders nor the names of its
|
||||
# contributors may be used to endorse or promote products derived from
|
||||
# this software without specific prior written permission.
|
||||
#
|
||||
# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
|
||||
# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
|
||||
# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
|
||||
# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
|
||||
# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
|
||||
# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
|
||||
# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
|
||||
# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
|
||||
# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
|
||||
# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
|
||||
# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
|
||||
|
||||
CROSS_COMPILE = arm-linux-gnueabihf-
|
||||
BIN_DIR = bin.aarch32
|
||||
|
||||
-include Makefile.common
|
||||
@@ -1,39 +0,0 @@
|
||||
# Copyright (c) 2019 ARM Limited
|
||||
# All rights reserved.
|
||||
#
|
||||
# The license below extends only to copyright in the software and shall
|
||||
# not be construed as granting a license to any other intellectual
|
||||
# property including but not limited to intellectual property relating
|
||||
# to a hardware implementation of the functionality of the software
|
||||
# licensed hereunder. You may use the software subject to the license
|
||||
# terms below provided that you ensure that this notice is replicated
|
||||
# unmodified and in its entirety in all distributions of the software,
|
||||
# modified or unmodified, in source code or in binary form.
|
||||
#
|
||||
# Redistribution and use in source and binary forms, with or without
|
||||
# modification, are permitted provided that the following conditions are
|
||||
# met: redistributions of source code must retain the above copyright
|
||||
# notice, this list of conditions and the following disclaimer;
|
||||
# redistributions in binary form must reproduce the above copyright
|
||||
# notice, this list of conditions and the following disclaimer in the
|
||||
# documentation and/or other materials provided with the distribution;
|
||||
# neither the name of the copyright holders nor the names of its
|
||||
# contributors may be used to endorse or promote products derived from
|
||||
# this software without specific prior written permission.
|
||||
#
|
||||
# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
|
||||
# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
|
||||
# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
|
||||
# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
|
||||
# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
|
||||
# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
|
||||
# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
|
||||
# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
|
||||
# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
|
||||
# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
|
||||
# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
|
||||
|
||||
CROSS_COMPILE = aarch64-linux-gnu-
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BIN_DIR = bin.aarch64
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|
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-include Makefile.common
|
||||
@@ -1,64 +0,0 @@
|
||||
# Copyright (c) 2019 ARM Limited
|
||||
# All rights reserved.
|
||||
#
|
||||
# The license below extends only to copyright in the software and shall
|
||||
# not be construed as granting a license to any other intellectual
|
||||
# property including but not limited to intellectual property relating
|
||||
# to a hardware implementation of the functionality of the software
|
||||
# licensed hereunder. You may use the software subject to the license
|
||||
# terms below provided that you ensure that this notice is replicated
|
||||
# unmodified and in its entirety in all distributions of the software,
|
||||
# modified or unmodified, in source code or in binary form.
|
||||
#
|
||||
# Redistribution and use in source and binary forms, with or without
|
||||
# modification, are permitted provided that the following conditions are
|
||||
# met: redistributions of source code must retain the above copyright
|
||||
# notice, this list of conditions and the following disclaimer;
|
||||
# redistributions in binary form must reproduce the above copyright
|
||||
# notice, this list of conditions and the following disclaimer in the
|
||||
# documentation and/or other materials provided with the distribution;
|
||||
# neither the name of the copyright holders nor the names of its
|
||||
# contributors may be used to endorse or promote products derived from
|
||||
# this software without specific prior written permission.
|
||||
#
|
||||
# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
|
||||
# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
|
||||
# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
|
||||
# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
|
||||
# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
|
||||
# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
|
||||
# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
|
||||
# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
|
||||
# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
|
||||
# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
|
||||
# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
|
||||
|
||||
CC := $(CROSS_COMPILE)$(CC)
|
||||
CXX := $(CROSS_COMPILE)$(CXX)
|
||||
LD := $(CXX)
|
||||
CCFLAGS ?=
|
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CXXFLAGS ?= -g -O3 -static -std=c++11
|
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LDFLAGS ?= -pthread
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||||
|
||||
BIN_DIR ?= ./bin
|
||||
|
||||
TESTS = test_pthread_create_seq \
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test_pthread_create_para \
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||||
test_pthread_mutex \
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||||
test_atomic \
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||||
test_pthread_cond \
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||||
test_std_thread \
|
||||
test_std_mutex \
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||||
test_std_condition_variable
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||||
|
||||
all: $(addprefix $(BIN_DIR)/,$(TESTS))
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||||
|
||||
$(BIN_DIR)/%: src/%.cpp
|
||||
@mkdir -p $(BIN_DIR)
|
||||
$(CXX) -o $@ $(CCFLAGS) $(CXXFLAGS) $(LDFLAGS) $^
|
||||
|
||||
clean:
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||||
$(RM) $(BIN_DIR)/*
|
||||
|
||||
.PHONY: all clean
|
||||
|
||||
@@ -1,39 +0,0 @@
|
||||
# Copyright (c) 2019 ARM Limited
|
||||
# All rights reserved.
|
||||
#
|
||||
# The license below extends only to copyright in the software and shall
|
||||
# not be construed as granting a license to any other intellectual
|
||||
# property including but not limited to intellectual property relating
|
||||
# to a hardware implementation of the functionality of the software
|
||||
# licensed hereunder. You may use the software subject to the license
|
||||
# terms below provided that you ensure that this notice is replicated
|
||||
# unmodified and in its entirety in all distributions of the software,
|
||||
# modified or unmodified, in source code or in binary form.
|
||||
#
|
||||
# Redistribution and use in source and binary forms, with or without
|
||||
# modification, are permitted provided that the following conditions are
|
||||
# met: redistributions of source code must retain the above copyright
|
||||
# notice, this list of conditions and the following disclaimer;
|
||||
# redistributions in binary form must reproduce the above copyright
|
||||
# notice, this list of conditions and the following disclaimer in the
|
||||
# documentation and/or other materials provided with the distribution;
|
||||
# neither the name of the copyright holders nor the names of its
|
||||
# contributors may be used to endorse or promote products derived from
|
||||
# this software without specific prior written permission.
|
||||
#
|
||||
# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
|
||||
# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
|
||||
# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
|
||||
# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
|
||||
# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
|
||||
# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
|
||||
# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
|
||||
# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
|
||||
# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
|
||||
# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
|
||||
# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
|
||||
|
||||
CROSS_COMPILE = riscv64-unknown-linux-gnu-
|
||||
BIN_DIR = bin.riscv64
|
||||
|
||||
-include Makefile.common
|
||||
@@ -1,39 +0,0 @@
|
||||
# Copyright (c) 2019 ARM Limited
|
||||
# All rights reserved.
|
||||
#
|
||||
# The license below extends only to copyright in the software and shall
|
||||
# not be construed as granting a license to any other intellectual
|
||||
# property including but not limited to intellectual property relating
|
||||
# to a hardware implementation of the functionality of the software
|
||||
# licensed hereunder. You may use the software subject to the license
|
||||
# terms below provided that you ensure that this notice is replicated
|
||||
# unmodified and in its entirety in all distributions of the software,
|
||||
# modified or unmodified, in source code or in binary form.
|
||||
#
|
||||
# Redistribution and use in source and binary forms, with or without
|
||||
# modification, are permitted provided that the following conditions are
|
||||
# met: redistributions of source code must retain the above copyright
|
||||
# notice, this list of conditions and the following disclaimer;
|
||||
# redistributions in binary form must reproduce the above copyright
|
||||
# notice, this list of conditions and the following disclaimer in the
|
||||
# documentation and/or other materials provided with the distribution;
|
||||
# neither the name of the copyright holders nor the names of its
|
||||
# contributors may be used to endorse or promote products derived from
|
||||
# this software without specific prior written permission.
|
||||
#
|
||||
# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
|
||||
# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
|
||||
# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
|
||||
# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
|
||||
# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
|
||||
# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
|
||||
# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
|
||||
# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
|
||||
# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
|
||||
# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
|
||||
# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
|
||||
|
||||
CROSS_COMPILE =
|
||||
BIN_DIR = bin.x86
|
||||
|
||||
-include Makefile.common
|
||||
@@ -1,115 +0,0 @@
|
||||
/*
|
||||
* Copyright (c) 2018, Cornell University
|
||||
* All rights reserved.
|
||||
*
|
||||
* Redistribution and use in source and binary forms, with or
|
||||
* without modification, are permitted provided that the following
|
||||
* conditions are met:
|
||||
*
|
||||
* Redistributions of source code must retain the above copyright
|
||||
* notice, this list of conditions and the following disclaimer.
|
||||
*
|
||||
* Redistributions in binary form must reproduce the above
|
||||
* copyright notice, this list of conditions and the following
|
||||
* disclaimer in the documentation and/or other materials provided
|
||||
* with the distribution.
|
||||
*
|
||||
* Neither the name of Cornell University nor the names of its
|
||||
* contributors may be used to endorse or promote products derived
|
||||
* from this software without specific prior written permission.
|
||||
*
|
||||
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND
|
||||
* CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES,
|
||||
* INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
|
||||
* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
|
||||
* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR
|
||||
* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
|
||||
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
|
||||
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
|
||||
* USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
|
||||
* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
||||
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
|
||||
* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
|
||||
* POSSIBILITY OF SUCH DAMAGE.
|
||||
*/
|
||||
|
||||
#include <pthread.h>
|
||||
|
||||
#include <atomic>
|
||||
#include <cstdlib>
|
||||
#include <iostream>
|
||||
|
||||
//------------------------------------------------------------------------
|
||||
// Create n threads, run them in parallel and wait for them in the master
|
||||
// thread.
|
||||
// Each child thread increments a shared variable m times atomically
|
||||
//------------------------------------------------------------------------
|
||||
|
||||
#define MAX_N_WORKER_THREADS 10
|
||||
|
||||
typedef struct
|
||||
{
|
||||
int nsteps;
|
||||
std::atomic<int>* shared_var;
|
||||
} ThreadArg;
|
||||
|
||||
void* func( void* args )
|
||||
{
|
||||
ThreadArg* my_args = ( ThreadArg* ) args;
|
||||
|
||||
int nsteps = my_args->nsteps;
|
||||
std::atomic<int>* shared_var = my_args->shared_var;
|
||||
|
||||
for ( int i = 0; i < nsteps; ++i ) {
|
||||
std::atomic_fetch_add(shared_var, 1);
|
||||
}
|
||||
|
||||
return nullptr;
|
||||
}
|
||||
|
||||
int main( int argc, const char* argv[] )
|
||||
{
|
||||
int n_worker_threads = 0;
|
||||
|
||||
// allocate all threads
|
||||
pthread_t* threads = new pthread_t[MAX_N_WORKER_THREADS];
|
||||
|
||||
// variable shared among all threads
|
||||
std::atomic<int> shared_var(0);
|
||||
|
||||
// number of steps each thread increments the shared_var
|
||||
int nsteps = 1000;
|
||||
|
||||
// set up threads' arguments
|
||||
ThreadArg* t_args = new ThreadArg[MAX_N_WORKER_THREADS];
|
||||
|
||||
int ret = 0;
|
||||
for ( size_t tid = 0; tid < MAX_N_WORKER_THREADS; tid++ ){
|
||||
t_args[tid].nsteps = nsteps;
|
||||
t_args[tid].shared_var = &shared_var;
|
||||
|
||||
// spawn thread
|
||||
ret = pthread_create( threads + tid, nullptr, func, &t_args[tid] );
|
||||
|
||||
if (ret != 0) {
|
||||
break;
|
||||
}
|
||||
|
||||
n_worker_threads++;
|
||||
}
|
||||
|
||||
// sync up all threads
|
||||
for ( int tid = 0; tid < n_worker_threads; ++tid ) {
|
||||
pthread_join( threads[tid], nullptr );
|
||||
}
|
||||
|
||||
// clean up
|
||||
delete[] threads;
|
||||
delete[] t_args;
|
||||
|
||||
// verify
|
||||
if ( shared_var != n_worker_threads * nsteps || n_worker_threads < 1)
|
||||
return EXIT_FAILURE;
|
||||
|
||||
return EXIT_SUCCESS;
|
||||
}
|
||||
@@ -1,111 +0,0 @@
|
||||
/*
|
||||
* Copyright (c) 2018, Cornell University
|
||||
* All rights reserved.
|
||||
*
|
||||
* Redistribution and use in source and binary forms, with or
|
||||
* without modification, are permitted provided that the following
|
||||
* conditions are met:
|
||||
*
|
||||
* Redistributions of source code must retain the above copyright
|
||||
* notice, this list of conditions and the following disclaimer.
|
||||
*
|
||||
* Redistributions in binary form must reproduce the above
|
||||
* copyright notice, this list of conditions and the following
|
||||
* disclaimer in the documentation and/or other materials provided
|
||||
* with the distribution.
|
||||
*
|
||||
* Neither the name of Cornell University nor the names of its
|
||||
* contributors may be used to endorse or promote products derived
|
||||
* from this software without specific prior written permission.
|
||||
*
|
||||
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND
|
||||
* CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES,
|
||||
* INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
|
||||
* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
|
||||
* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR
|
||||
* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
|
||||
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
|
||||
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
|
||||
* USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
|
||||
* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
||||
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
|
||||
* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
|
||||
* POSSIBILITY OF SUCH DAMAGE.
|
||||
*
|
||||
* Author: Moyang Wang
|
||||
*/
|
||||
|
||||
#include <pthread.h>
|
||||
|
||||
#include <cstdlib>
|
||||
#include <iostream>
|
||||
#include <mutex>
|
||||
#include <vector>
|
||||
|
||||
//------------------------------------------------------------------------
|
||||
// Test pthread_cond
|
||||
//------------------------------------------------------------------------
|
||||
// The master thread creates N threads, each of which waits on a
|
||||
// condition variable of a signal to start. The master thread then set
|
||||
// the signal and notifies all other threads to begin.
|
||||
|
||||
#define MAX_N_WORKER_THREADS 10
|
||||
|
||||
pthread_mutex_t mutex = PTHREAD_MUTEX_INITIALIZER;
|
||||
pthread_cond_t cv = PTHREAD_COND_INITIALIZER;
|
||||
|
||||
bool ready = false;
|
||||
|
||||
void* print_id( void* arg_vptr )
|
||||
{
|
||||
pthread_mutex_lock( &mutex );
|
||||
long id = (long)arg_vptr;
|
||||
|
||||
while (!ready) {
|
||||
pthread_cond_wait( &cv, &mutex );
|
||||
}
|
||||
// ...
|
||||
std::cout << "thread " << id << '\n';
|
||||
|
||||
pthread_mutex_unlock( &mutex );
|
||||
|
||||
return nullptr;
|
||||
}
|
||||
|
||||
void go()
|
||||
{
|
||||
pthread_mutex_lock( &mutex );
|
||||
ready = true;
|
||||
pthread_cond_broadcast( &cv );
|
||||
pthread_mutex_unlock( &mutex );
|
||||
}
|
||||
|
||||
int main( int argc, char* argv[] )
|
||||
{
|
||||
size_t n_worker_threads = 0;
|
||||
|
||||
std::vector< pthread_t > threads( MAX_N_WORKER_THREADS );
|
||||
|
||||
int ret = 0;
|
||||
for ( size_t i = 0; i < MAX_N_WORKER_THREADS; i++ ){
|
||||
ret = pthread_create( &threads[i], nullptr, print_id, (void*)i );
|
||||
if (ret != 0) {
|
||||
break;
|
||||
}
|
||||
n_worker_threads++;
|
||||
}
|
||||
|
||||
std::cout << n_worker_threads << " threads ready to race...\n";
|
||||
|
||||
go();
|
||||
|
||||
for ( size_t i = 1; i < n_worker_threads; i++ ) {
|
||||
pthread_join( threads[i], nullptr );
|
||||
}
|
||||
|
||||
if (n_worker_threads < 1) {
|
||||
return EXIT_FAILURE;
|
||||
}
|
||||
|
||||
return EXIT_SUCCESS;
|
||||
}
|
||||
@@ -1,116 +0,0 @@
|
||||
/*
|
||||
* Copyright (c) 2018, Cornell University
|
||||
* All rights reserved.
|
||||
*
|
||||
* Redistribution and use in source and binary forms, with or
|
||||
* without modification, are permitted provided that the following
|
||||
* conditions are met:
|
||||
*
|
||||
* Redistributions of source code must retain the above copyright
|
||||
* notice, this list of conditions and the following disclaimer.
|
||||
*
|
||||
* Redistributions in binary form must reproduce the above
|
||||
* copyright notice, this list of conditions and the following
|
||||
* disclaimer in the documentation and/or other materials provided
|
||||
* with the distribution.
|
||||
*
|
||||
* Neither the name of Cornell University nor the names of its
|
||||
* contributors may be used to endorse or promote products derived
|
||||
* from this software without specific prior written permission.
|
||||
*
|
||||
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND
|
||||
* CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES,
|
||||
* INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
|
||||
* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
|
||||
* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR
|
||||
* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
|
||||
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
|
||||
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
|
||||
* USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
|
||||
* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
||||
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
|
||||
* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
|
||||
* POSSIBILITY OF SUCH DAMAGE.
|
||||
*/
|
||||
|
||||
#include <pthread.h>
|
||||
|
||||
#include <cstdlib>
|
||||
#include <iostream>
|
||||
|
||||
//------------------------------------------------------------------------
|
||||
// Create n threads, run them in parallel and wait for them in the master
|
||||
// thread.
|
||||
// Each child thread writes its thread id to an output array
|
||||
//------------------------------------------------------------------------
|
||||
|
||||
#define MAX_N_WORKER_THREADS 10
|
||||
|
||||
typedef struct
|
||||
{
|
||||
int tid;
|
||||
int* output;
|
||||
} ThreadArg;
|
||||
|
||||
void* func( void* args )
|
||||
{
|
||||
ThreadArg* my_args = ( ThreadArg* ) args;
|
||||
|
||||
// write tid to this thread's output
|
||||
(*my_args->output) = my_args->tid;
|
||||
|
||||
return nullptr;
|
||||
}
|
||||
|
||||
int main( int argc, const char* argv[] )
|
||||
{
|
||||
int n_worker_threads = 0;
|
||||
|
||||
// allocate all threads
|
||||
pthread_t* threads = new pthread_t[MAX_N_WORKER_THREADS];
|
||||
ThreadArg* t_args = new ThreadArg[MAX_N_WORKER_THREADS];
|
||||
|
||||
// create an output array for all threads
|
||||
int* outputs = new int[MAX_N_WORKER_THREADS];
|
||||
int ret;
|
||||
|
||||
// try to spawn as many worker threads as possible
|
||||
for ( int tid = 0; tid < MAX_N_WORKER_THREADS; ++tid ) {
|
||||
|
||||
// set up thread args
|
||||
t_args[tid].tid = tid;
|
||||
t_args[tid].output = outputs + tid;
|
||||
|
||||
// spawn thread
|
||||
ret = pthread_create( threads + tid, nullptr, func, &t_args[tid] );
|
||||
if (ret != 0) {
|
||||
break;
|
||||
}
|
||||
|
||||
n_worker_threads++;
|
||||
}
|
||||
|
||||
// sync up all threads
|
||||
for ( int tid = 0; tid < n_worker_threads; ++tid ) {
|
||||
pthread_join( threads[tid], nullptr );
|
||||
}
|
||||
|
||||
// verify
|
||||
bool passed = true;
|
||||
for ( int i = 0; i < n_worker_threads; ++i ) {
|
||||
if ( outputs[i] != i ) {
|
||||
passed = false;
|
||||
}
|
||||
}
|
||||
|
||||
// clean up
|
||||
delete[] threads;
|
||||
delete[] t_args;
|
||||
delete[] outputs;
|
||||
|
||||
// failed if outputs are not correct or no worker thread was spawned
|
||||
if (!passed || n_worker_threads < 1)
|
||||
return EXIT_FAILURE;
|
||||
|
||||
return EXIT_SUCCESS;
|
||||
}
|
||||
@@ -1,114 +0,0 @@
|
||||
/*
|
||||
* Copyright (c) 2018, Cornell University
|
||||
* All rights reserved.
|
||||
*
|
||||
* Redistribution and use in source and binary forms, with or
|
||||
* without modification, are permitted provided that the following
|
||||
* conditions are met:
|
||||
*
|
||||
* Redistributions of source code must retain the above copyright
|
||||
* notice, this list of conditions and the following disclaimer.
|
||||
*
|
||||
* Redistributions in binary form must reproduce the above
|
||||
* copyright notice, this list of conditions and the following
|
||||
* disclaimer in the documentation and/or other materials provided
|
||||
* with the distribution.
|
||||
*
|
||||
* Neither the name of Cornell University nor the names of its
|
||||
* contributors may be used to endorse or promote products derived
|
||||
* from this software without specific prior written permission.
|
||||
*
|
||||
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND
|
||||
* CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES,
|
||||
* INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
|
||||
* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
|
||||
* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR
|
||||
* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
|
||||
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
|
||||
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
|
||||
* USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
|
||||
* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
||||
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
|
||||
* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
|
||||
* POSSIBILITY OF SUCH DAMAGE.
|
||||
*/
|
||||
|
||||
#include <pthread.h>
|
||||
|
||||
#include <cstdlib>
|
||||
#include <iostream>
|
||||
|
||||
//------------------------------------------------------------------------
|
||||
// Create n threads and run them one after another
|
||||
// Each child thread writes its thread id to an output array
|
||||
//------------------------------------------------------------------------
|
||||
|
||||
#define MAX_N_WORKER_THREADS 10
|
||||
|
||||
typedef struct
|
||||
{
|
||||
int tid;
|
||||
int* output;
|
||||
} ThreadArg;
|
||||
|
||||
void* func( void* args )
|
||||
{
|
||||
ThreadArg* my_args = ( ThreadArg* ) args;
|
||||
|
||||
// write tid to this thread's output
|
||||
(*my_args->output) = my_args->tid;
|
||||
|
||||
return nullptr;
|
||||
}
|
||||
|
||||
int main( int argc, const char* argv[] )
|
||||
{
|
||||
int n_worker_threads = 0;
|
||||
|
||||
// allocate all threads
|
||||
pthread_t* threads = new pthread_t[MAX_N_WORKER_THREADS];
|
||||
ThreadArg* t_args = new ThreadArg[MAX_N_WORKER_THREADS];
|
||||
|
||||
// create an output array for all threads
|
||||
int* outputs = new int[MAX_N_WORKER_THREADS];
|
||||
int ret;
|
||||
|
||||
// try to spawn as many worker threads as possible
|
||||
for ( int tid = 0; tid < MAX_N_WORKER_THREADS; ++tid ) {
|
||||
|
||||
// set up thread args
|
||||
t_args[tid].tid = tid;
|
||||
t_args[tid].output = outputs + tid;
|
||||
|
||||
// spawn thread
|
||||
ret = pthread_create( threads + tid, nullptr, func, &t_args[tid] );
|
||||
if (ret != 0 ) {
|
||||
break;
|
||||
}
|
||||
|
||||
n_worker_threads++;
|
||||
|
||||
// wait for the thread to join before moving on
|
||||
pthread_join( threads[tid], nullptr );
|
||||
}
|
||||
|
||||
// verify
|
||||
bool passed = true;
|
||||
for ( int i = 0; i < n_worker_threads; ++i ) {
|
||||
if ( outputs[i] != i ) {
|
||||
passed = false;
|
||||
break;
|
||||
}
|
||||
}
|
||||
|
||||
// clean up
|
||||
delete[] threads;
|
||||
delete[] t_args;
|
||||
delete[] outputs;
|
||||
|
||||
// failed if outputs are not correct or no worker thread was spawned
|
||||
if (!passed || n_worker_threads < 1)
|
||||
return EXIT_FAILURE;
|
||||
|
||||
return EXIT_SUCCESS;
|
||||
}
|
||||
@@ -1,131 +0,0 @@
|
||||
/*
|
||||
* Copyright (c) 2018, Cornell University
|
||||
* All rights reserved.
|
||||
*
|
||||
* Redistribution and use in source and binary forms, with or
|
||||
* without modification, are permitted provided that the following
|
||||
* conditions are met:
|
||||
*
|
||||
* Redistributions of source code must retain the above copyright
|
||||
* notice, this list of conditions and the following disclaimer.
|
||||
*
|
||||
* Redistributions in binary form must reproduce the above
|
||||
* copyright notice, this list of conditions and the following
|
||||
* disclaimer in the documentation and/or other materials provided
|
||||
* with the distribution.
|
||||
*
|
||||
* Neither the name of Cornell University nor the names of its
|
||||
* contributors may be used to endorse or promote products derived
|
||||
* from this software without specific prior written permission.
|
||||
*
|
||||
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND
|
||||
* CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES,
|
||||
* INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
|
||||
* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
|
||||
* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR
|
||||
* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
|
||||
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
|
||||
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
|
||||
* USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
|
||||
* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
||||
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
|
||||
* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
|
||||
* POSSIBILITY OF SUCH DAMAGE.
|
||||
*/
|
||||
|
||||
#include <pthread.h>
|
||||
|
||||
#include <cstdlib>
|
||||
#include <iostream>
|
||||
|
||||
//------------------------------------------------------------------------
|
||||
// Create n threads, run them in parallel and wait for them in the master
|
||||
// thread.
|
||||
// Each child thread increments a shared variable m times
|
||||
//------------------------------------------------------------------------
|
||||
|
||||
#define MAX_N_WORKER_THREADS 10
|
||||
|
||||
typedef struct
|
||||
{
|
||||
int nsteps;
|
||||
int* shared_var;
|
||||
pthread_mutex_t* lock;
|
||||
} ThreadArg;
|
||||
|
||||
void* func( void* args )
|
||||
{
|
||||
ThreadArg* my_args = ( ThreadArg* ) args;
|
||||
|
||||
int nsteps = my_args->nsteps;
|
||||
int* shared_var = my_args->shared_var;
|
||||
pthread_mutex_t* lock = my_args->lock;
|
||||
|
||||
for ( int i = 0; i < nsteps; ++i ) {
|
||||
// acquire the lock
|
||||
pthread_mutex_lock(lock);
|
||||
|
||||
// increment the shared_var
|
||||
(*shared_var)++;
|
||||
|
||||
// release the lock
|
||||
pthread_mutex_unlock(lock);
|
||||
}
|
||||
|
||||
return nullptr;
|
||||
}
|
||||
|
||||
int main( int argc, const char* argv[] )
|
||||
{
|
||||
int n_worker_threads = 0;
|
||||
|
||||
// allocate all threads
|
||||
pthread_t* threads = new pthread_t[MAX_N_WORKER_THREADS];
|
||||
ThreadArg* t_args = new ThreadArg[MAX_N_WORKER_THREADS];
|
||||
|
||||
// variable shared among all threads
|
||||
int shared_var = 0;
|
||||
|
||||
// number of steps each thread increments the shared_var
|
||||
int nsteps = 10000;
|
||||
|
||||
// create a shared lock
|
||||
pthread_mutex_t lock;
|
||||
pthread_mutex_init(&lock, NULL);
|
||||
|
||||
int ret;
|
||||
|
||||
// try to spawn as many worker threads as possible
|
||||
for ( int tid = 0; tid < MAX_N_WORKER_THREADS; ++tid ) {
|
||||
t_args[tid].nsteps = nsteps;
|
||||
t_args[tid].shared_var = &shared_var;
|
||||
t_args[tid].lock = &lock;
|
||||
|
||||
// spawn thread
|
||||
ret = pthread_create( threads + tid, nullptr, func, &t_args[tid] );
|
||||
|
||||
if (ret != 0)
|
||||
break;
|
||||
|
||||
n_worker_threads++;
|
||||
}
|
||||
|
||||
// sync up all threads
|
||||
for ( int tid = 0; tid < n_worker_threads; ++tid ) {
|
||||
pthread_join( threads[tid], nullptr );
|
||||
}
|
||||
|
||||
// verify
|
||||
bool passed = true;
|
||||
if ( shared_var != n_worker_threads * nsteps )
|
||||
passed = false;
|
||||
|
||||
// clean up
|
||||
delete[] threads;
|
||||
delete[] t_args;
|
||||
|
||||
if (!passed || n_worker_threads < 1)
|
||||
return EXIT_FAILURE;
|
||||
|
||||
return EXIT_SUCCESS;
|
||||
}
|
||||
@@ -1,96 +0,0 @@
|
||||
/*
|
||||
* Copyright (c) 2018, Cornell University
|
||||
* All rights reserved.
|
||||
*
|
||||
* Redistribution and use in source and binary forms, with or
|
||||
* without modification, are permitted provided that the following
|
||||
* conditions are met:
|
||||
*
|
||||
* Redistributions of source code must retain the above copyright
|
||||
* notice, this list of conditions and the following disclaimer.
|
||||
*
|
||||
* Redistributions in binary form must reproduce the above
|
||||
* copyright notice, this list of conditions and the following
|
||||
* disclaimer in the documentation and/or other materials provided
|
||||
* with the distribution.
|
||||
*
|
||||
* Neither the name of Cornell University nor the names of its
|
||||
* contributors may be used to endorse or promote products derived
|
||||
* from this software without specific prior written permission.
|
||||
*
|
||||
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND
|
||||
* CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES,
|
||||
* INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
|
||||
* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
|
||||
* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR
|
||||
* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
|
||||
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
|
||||
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
|
||||
* USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
|
||||
* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
||||
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
|
||||
* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
|
||||
* POSSIBILITY OF SUCH DAMAGE.
|
||||
*/
|
||||
|
||||
#include <condition_variable>
|
||||
#include <iostream>
|
||||
#include <mutex>
|
||||
#include <thread>
|
||||
#include <vector>
|
||||
|
||||
//------------------------------------------------------------------------
|
||||
// Test std::condition_variable
|
||||
//------------------------------------------------------------------------
|
||||
// The master thread creates N threads, each of which waits on a
|
||||
// condition variable of a signal to start. The master thread then set
|
||||
// the signal and notifies all other threads to begin.
|
||||
|
||||
#define MAX_N_WORKER_THREADS 10
|
||||
|
||||
std::mutex mtx;
|
||||
std::condition_variable cv;
|
||||
bool ready = false;
|
||||
|
||||
void print_id( size_t id )
|
||||
{
|
||||
std::unique_lock<std::mutex> lck(mtx);
|
||||
while (!ready)
|
||||
cv.wait(lck);
|
||||
// ...
|
||||
std::cout << "thread " << id << '\n';
|
||||
}
|
||||
|
||||
void go()
|
||||
{
|
||||
std::unique_lock<std::mutex> lck(mtx);
|
||||
ready = true;
|
||||
cv.notify_all();
|
||||
}
|
||||
|
||||
int main( int argc, char* argv[] )
|
||||
{
|
||||
size_t n_worker_threads = 0;
|
||||
|
||||
std::vector< std::thread > threads;
|
||||
|
||||
for ( size_t i = 0; i < MAX_N_WORKER_THREADS; i++ ) {
|
||||
try {
|
||||
threads.push_back( std::thread( print_id, i ) );
|
||||
} catch ( const std::system_error& err ) {
|
||||
break;
|
||||
}
|
||||
n_worker_threads++;
|
||||
}
|
||||
|
||||
std::cout << n_worker_threads << " threads ready to race...\n";
|
||||
go(); // go!
|
||||
|
||||
for (int i = 0; i < n_worker_threads; ++i) {
|
||||
threads[i].join();
|
||||
}
|
||||
|
||||
// if there is no timeout (i.e., threads are all waken up properly, this
|
||||
// test always succeeds)
|
||||
return EXIT_SUCCESS;
|
||||
}
|
||||
@@ -1,90 +0,0 @@
|
||||
/*
|
||||
* Copyright (c) 2018, Cornell University
|
||||
* All rights reserved.
|
||||
*
|
||||
* Redistribution and use in source and binary forms, with or
|
||||
* without modification, are permitted provided that the following
|
||||
* conditions are met:
|
||||
*
|
||||
* Redistributions of source code must retain the above copyright
|
||||
* notice, this list of conditions and the following disclaimer.
|
||||
*
|
||||
* Redistributions in binary form must reproduce the above
|
||||
* copyright notice, this list of conditions and the following
|
||||
* disclaimer in the documentation and/or other materials provided
|
||||
* with the distribution.
|
||||
*
|
||||
* Neither the name of Cornell University nor the names of its
|
||||
* contributors may be used to endorse or promote products derived
|
||||
* from this software without specific prior written permission.
|
||||
*
|
||||
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND
|
||||
* CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES,
|
||||
* INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
|
||||
* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
|
||||
* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR
|
||||
* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
|
||||
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
|
||||
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
|
||||
* USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
|
||||
* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
||||
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
|
||||
* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
|
||||
* POSSIBILITY OF SUCH DAMAGE.
|
||||
*/
|
||||
|
||||
#include <cstdlib>
|
||||
#include <iostream>
|
||||
#include <mutex>
|
||||
#include <thread>
|
||||
#include <vector>
|
||||
|
||||
//------------------------------------------------------------------------
|
||||
// Create n threads, run them in parallel and wait for them in the master
|
||||
// thread.
|
||||
// Each child thread increments a shared variable m times
|
||||
//------------------------------------------------------------------------
|
||||
|
||||
#define MAX_N_WORKER_THREADS 10
|
||||
|
||||
int main( int argc, const char* argv[] )
|
||||
{
|
||||
int n_worker_threads = 0;
|
||||
|
||||
// allocate all threads
|
||||
std::vector< std::thread > threads;
|
||||
|
||||
// mutex to protect the shared variable
|
||||
std::mutex my_mutex;
|
||||
|
||||
// variable shared among all threads
|
||||
int shared_var = 0;
|
||||
|
||||
// number of steps each thread increments the shared_var
|
||||
int nsteps = 1000;
|
||||
|
||||
for ( int tid = 0; tid < MAX_N_WORKER_THREADS; ++tid ) {
|
||||
try {
|
||||
threads.push_back( std::thread( [&] {
|
||||
std::lock_guard<std::mutex> guard(my_mutex);
|
||||
for ( int i = 0; i < nsteps; ++i )
|
||||
shared_var++;
|
||||
} ) );
|
||||
} catch ( const std::system_error& err ) {
|
||||
break;
|
||||
}
|
||||
n_worker_threads++;
|
||||
}
|
||||
|
||||
// sync up all threads
|
||||
for (int i = 0; i < n_worker_threads; ++i) {
|
||||
threads[i].join();
|
||||
}
|
||||
|
||||
// verify
|
||||
if ( shared_var != n_worker_threads * nsteps || n_worker_threads < 1) {
|
||||
return EXIT_FAILURE;
|
||||
}
|
||||
|
||||
return EXIT_SUCCESS;
|
||||
}
|
||||
@@ -1,89 +0,0 @@
|
||||
/*
|
||||
* Copyright (c) 2018, Cornell University
|
||||
* All rights reserved.
|
||||
*
|
||||
* Redistribution and use in source and binary forms, with or
|
||||
* without modification, are permitted provided that the following
|
||||
* conditions are met:
|
||||
*
|
||||
* Redistributions of source code must retain the above copyright
|
||||
* notice, this list of conditions and the following disclaimer.
|
||||
*
|
||||
* Redistributions in binary form must reproduce the above
|
||||
* copyright notice, this list of conditions and the following
|
||||
* disclaimer in the documentation and/or other materials provided
|
||||
* with the distribution.
|
||||
*
|
||||
* Neither the name of Cornell University nor the names of its
|
||||
* contributors may be used to endorse or promote products derived
|
||||
* from this software without specific prior written permission.
|
||||
*
|
||||
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND
|
||||
* CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES,
|
||||
* INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
|
||||
* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
|
||||
* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR
|
||||
* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
|
||||
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
|
||||
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
|
||||
* USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
|
||||
* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
||||
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
|
||||
* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
|
||||
* POSSIBILITY OF SUCH DAMAGE.
|
||||
*/
|
||||
|
||||
#include <cstdlib>
|
||||
#include <iostream>
|
||||
#include <string>
|
||||
#include <thread>
|
||||
#include <vector>
|
||||
|
||||
//------------------------------------------------------------------------
|
||||
// Test std::thread
|
||||
//------------------------------------------------------------------------
|
||||
// Create n threads, run them in parallel and wait for them in the master
|
||||
// thread.
|
||||
// Each child thread writes its thread id to an output array
|
||||
|
||||
#define MAX_N_WORKER_THREADS 10
|
||||
|
||||
int main( int argc, char* argv[] )
|
||||
{
|
||||
int n_worker_threads = 0;
|
||||
|
||||
std::vector< std::thread > threads;
|
||||
std::vector<int> outputs( MAX_N_WORKER_THREADS, 0 );
|
||||
|
||||
for ( int tid = 0; tid < MAX_N_WORKER_THREADS; ++tid ) {
|
||||
try {
|
||||
threads.push_back( std::thread( [&] (size_t thread_id ) {
|
||||
std::cout << "Hello from thread " << thread_id
|
||||
<< std::endl;
|
||||
outputs[thread_id] = thread_id;
|
||||
}, tid ) );
|
||||
} catch ( const std::system_error& err ) {
|
||||
break;
|
||||
}
|
||||
n_worker_threads++;
|
||||
}
|
||||
|
||||
std::cout << "Hello from master thread" << std::endl;
|
||||
|
||||
// sync up all threads
|
||||
for (int i = 0; i < n_worker_threads; ++i) {
|
||||
threads[i].join();
|
||||
}
|
||||
|
||||
if (n_worker_threads < 1) {
|
||||
return EXIT_FAILURE;
|
||||
}
|
||||
|
||||
for ( int i = 0; i < n_worker_threads; ++i ) {
|
||||
if ( outputs[i] != i ) {
|
||||
return EXIT_FAILURE;
|
||||
}
|
||||
}
|
||||
|
||||
return EXIT_SUCCESS;
|
||||
}
|
||||
Reference in New Issue
Block a user