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Diffstat (limited to 'toolkit/crashreporter/breakpad-client/linux/minidump_writer/linux_dumper_unittest_helper.cc')
-rw-r--r-- | toolkit/crashreporter/breakpad-client/linux/minidump_writer/linux_dumper_unittest_helper.cc | 95 |
1 files changed, 95 insertions, 0 deletions
diff --git a/toolkit/crashreporter/breakpad-client/linux/minidump_writer/linux_dumper_unittest_helper.cc b/toolkit/crashreporter/breakpad-client/linux/minidump_writer/linux_dumper_unittest_helper.cc new file mode 100644 index 0000000000..3ad48e5015 --- /dev/null +++ b/toolkit/crashreporter/breakpad-client/linux/minidump_writer/linux_dumper_unittest_helper.cc @@ -0,0 +1,95 @@ +// 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 <stdint.h> +#include <stdio.h> +#include <stdlib.h> +#include <sys/syscall.h> +#include <unistd.h> + +#include "common/scoped_ptr.h" +#include "third_party/lss/linux_syscall_support.h" + +#if defined(__ARM_EABI__) +#define TID_PTR_REGISTER "r3" +#elif defined(__aarch64__) +#define TID_PTR_REGISTER "x3" +#elif defined(__i386) +#define TID_PTR_REGISTER "ecx" +#elif defined(__x86_64) +#define TID_PTR_REGISTER "rcx" +#elif defined(__mips__) +#define TID_PTR_REGISTER "$1" +#else +#error This test has not been ported to this platform. +#endif + +void *thread_function(void *data) { + int pipefd = *static_cast<int *>(data); + volatile pid_t* thread_id = new pid_t; + *thread_id = syscall(__NR_gettid); + // Signal parent that a thread has started. + uint8_t byte = 1; + if (write(pipefd, &byte, sizeof(byte)) != sizeof(byte)) { + perror("ERROR: parent notification failed"); + return NULL; + } + register volatile pid_t *thread_id_ptr asm(TID_PTR_REGISTER) = thread_id; + while (true) + asm volatile ("" : : "r" (thread_id_ptr)); + return NULL; +} + +int main(int argc, char *argv[]) { + if (argc < 3) { + fprintf(stderr, + "usage: linux_dumper_unittest_helper <pipe fd> <# of threads>\n"); + return 1; + } + int pipefd = atoi(argv[1]); + int num_threads = atoi(argv[2]); + if (num_threads < 1) { + fprintf(stderr, "ERROR: number of threads is 0"); + return 1; + } + google_breakpad::scoped_array<pthread_t> threads(new pthread_t[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, &pipefd); + } + thread_function(&pipefd); + return 0; +} |