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Allow generating minidumps from live process on Linux via ExceptionHandler

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Original patch by Chris Jones <jones.chris.g@gmail.com> at https://bugzilla.mozilla.org/show_bug.cgi?id=544936 and https://bugzilla.mozilla.org/show_bug.cgi?id=555309
R=mark at https://breakpad.appspot.com/449003/

git-svn-id: http://google-breakpad.googlecode.com/svn/trunk@1043 4c0a9323-5329-0410-9bdc-e9ce6186880e
This commit is contained in:
ted.mielczarek@gmail.com 2012-09-18 18:51:56 +00:00
parent 6a5ab68d56
commit 67364c1326
9 changed files with 173 additions and 8 deletions
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66
src/client/linux/handler/exception_handler_unittest.cc
View file

@ -895,6 +895,25 @@ TEST(ExceptionHandlerTest, ExternalDumper) {
unlink(templ.c_str());
}
TEST(ExceptionHandlerTest, WriteMinidumpExceptionStream) {
AutoTempDir temp_dir;
ExceptionHandler handler(MinidumpDescriptor(temp_dir.path()), NULL, NULL,
NULL, false, -1);
ASSERT_TRUE(handler.WriteMinidump());
string minidump_path = handler.minidump_descriptor().path();
// Read the minidump and check the exception stream.
Minidump minidump(minidump_path);
ASSERT_TRUE(minidump.Read());
MinidumpException* exception = minidump.GetException();
ASSERT_TRUE(exception);
const MDRawExceptionStream* raw = exception->exception();
ASSERT_TRUE(raw);
EXPECT_EQ(MD_EXCEPTION_CODE_LIN_DUMP_REQUESTED,
raw->exception_record.exception_code);
}
TEST(ExceptionHandlerTest, GenerateMultipleDumpsWithFD) {
AutoTempDir temp_dir;
std::string path;
@ -1021,3 +1040,50 @@ TEST(ExceptionHandlerTest, AdditionalMemoryRemove) {
delete[] memory;
}
static bool SimpleCallback(const MinidumpDescriptor& descriptor,
void* context,
bool succeeded) {
string* filename = reinterpret_cast<string*>(context);
*filename = descriptor.path();
return true;
}
TEST(ExceptionHandlerTest, WriteMinidumpForChild) {
int fds[2];
ASSERT_NE(-1, pipe(fds));
const pid_t child = fork();
if (child == 0) {
close(fds[1]);
char b;
HANDLE_EINTR(read(fds[0], &b, sizeof(b)));
close(fds[0]);
syscall(__NR_exit);
}
close(fds[0]);
AutoTempDir temp_dir;
string minidump_filename;
ASSERT_TRUE(
ExceptionHandler::WriteMinidumpForChild(child, child,
temp_dir.path(), SimpleCallback,
(void*)&minidump_filename));
Minidump minidump(minidump_filename);
ASSERT_TRUE(minidump.Read());
// Check that the crashing thread is the main thread of |child|
MinidumpException* exception = minidump.GetException();
ASSERT_TRUE(exception);
u_int32_t thread_id;
ASSERT_TRUE(exception->GetThreadID(&thread_id));
EXPECT_EQ(child, thread_id);
const MDRawExceptionStream* raw = exception->exception();
ASSERT_TRUE(raw);
EXPECT_EQ(MD_EXCEPTION_CODE_LIN_DUMP_REQUESTED,
raw->exception_record.exception_code);
close(fds[1]);
unlink(minidump_filename.c_str());
}