diff options
Diffstat (limited to 'src/client/linux/minidump_writer/linux_dumper_unittest_helper.cc')
-rw-r--r-- | src/client/linux/minidump_writer/linux_dumper_unittest_helper.cc | 64 |
1 files changed, 64 insertions, 0 deletions
diff --git a/src/client/linux/minidump_writer/linux_dumper_unittest_helper.cc b/src/client/linux/minidump_writer/linux_dumper_unittest_helper.cc new file mode 100644 index 00000000..f744d72c --- /dev/null +++ b/src/client/linux/minidump_writer/linux_dumper_unittest_helper.cc @@ -0,0 +1,64 @@ +// Copyright (c) 2010, Google Inc. +// 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 Google Inc. 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. +// +// Helper program for the linux_dumper class, which creates a bunch of +// threads. The first word of each thread's stack is set to the thread +// id. + +#include <pthread.h> +#include <stdio.h> +#include <stdlib.h> +#include <sys/syscall.h> +#include <unistd.h> + +#pragma GCC optimize ("O0") +void *thread_function(void *data) __attribute__((noinline, optimize("O2"))); + +void *thread_function(void *data) { + pid_t thread_id = syscall(SYS_gettid); + while (true) ; + asm(""); +} + +int main(int argc, char *argv[]) { + int num_threads = atoi(argv[1]); + if (num_threads < 1) { + fprintf(stderr, "ERROR: number of threads is 0"); + return 1; + } + pthread_t threads[num_threads]; + pthread_attr_t thread_attributes; + pthread_attr_init(&thread_attributes); + pthread_attr_setdetachstate(&thread_attributes, PTHREAD_CREATE_DETACHED); + for (int i = 1; i < num_threads; i++) { + pthread_create(&threads[i], &thread_attributes, &thread_function, NULL); + } + thread_function(NULL); + return 0; +} |