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Add a filter callback to CrashGenerationServer on mac

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A=Rafael Ávila de Espíndola <respindola@mozilla.com> R=ted at https://bugzilla.mozilla.org/show_bug.cgi?id=732173

git-svn-id: http://google-breakpad.googlecode.com/svn/trunk@990 4c0a9323-5329-0410-9bdc-e9ce6186880e
This commit is contained in:
ted.mielczarek 2012-07-20 12:24:25 +00:00
parent 2f56276fbf
commit b6b4451142
3 changed files with 76 additions and 10 deletions
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6
src/client/mac/crash_generation/crash_generation_server.cc
View File

@ -37,6 +37,8 @@ namespace google_breakpad {
CrashGenerationServer::CrashGenerationServer(
const char *mach_port_name,
FilterCallback filter,
void *filter_context,
OnClientDumpRequestCallback dump_callback,
void *dump_context,
OnClientExitingCallback exit_callback,
@ -44,6 +46,8 @@ CrashGenerationServer::CrashGenerationServer(
bool generate_dumps,
const std::string &dump_path)
: dump_callback_(dump_callback),
filter_(filter),
filter_context_(filter_context),
dump_context_(dump_context),
exit_callback_(exit_callback),
exit_context_(exit_context),
@ -110,7 +114,7 @@ bool CrashGenerationServer::WaitForOneMessage() {
bool result;
std::string dump_path;
if (generate_dumps_) {
if (generate_dumps_ && (!filter_ || filter_(filter_context_))) {
ScopedTaskSuspend suspend(remote_task);
MinidumpGenerator generator(remote_task, handler_thread);

9
src/client/mac/crash_generation/crash_generation_server.h
View File

@ -65,10 +65,14 @@ class CrashGenerationServer {
typedef void (*OnClientExitingCallback)(void *context,
const ClientInfo &client_info);
// If a FilterCallback returns false, the dump will not be written.
typedef bool (*FilterCallback)(void *context);
// Create an instance with the given parameters.
//
// mach_port_name: Named server port to listen on.
// filter: Callback for a client to cancel writing a dump.
// filter_context: Context for the filter callback.
// dump_callback: Callback for a client crash dump request.
// dump_context: Context for client crash dump request callback.
// exit_callback: Callback for client process exit.
@ -80,6 +84,8 @@ class CrashGenerationServer {
// dump_path: Path for generating dumps; required only if true is
// passed for generateDumps parameter; NULL can be passed otherwise.
CrashGenerationServer(const char *mach_port_name,
FilterCallback filter,
void *filter_context,
OnClientDumpRequestCallback dump_callback,
void *dump_context,
OnClientExitingCallback exit_callback,
@ -109,6 +115,9 @@ class CrashGenerationServer {
// if a quit message was received or if an error occurred.
bool WaitForOneMessage();
FilterCallback filter_;
void *filter_context_;
OnClientDumpRequestCallback dump_callback_;
void *dump_context_;

71
src/client/mac/tests/crash_generation_server_test.cc
View File

@ -84,12 +84,14 @@ public:
AutoTempDir temp_dir;
// Counter just to ensure that we don't hit the same port again
static int i;
bool filter_callback_called;
void SetUp() {
sprintf(mach_port_name,
"com.google.breakpad.ServerTest.%d.%d", getpid(),
CrashGenerationServerTest::i++);
"com.google.breakpad.ServerTest.%d.%d", getpid(),
CrashGenerationServerTest::i++);
child_pid = (pid_t)-1;
filter_callback_called = false;
}
};
int CrashGenerationServerTest::i = 0;
@ -97,12 +99,14 @@ int CrashGenerationServerTest::i = 0;
// Test that starting and stopping a server works
TEST_F(CrashGenerationServerTest, testStartStopServer) {
CrashGenerationServer server(mach_port_name,
NULL, // dump callback
NULL, // dump context
NULL, // exit callback
NULL, // exit context
false, // generate dumps
""); // dump path
NULL, // filter callback
NULL, // filter context
NULL, // dump callback
NULL, // dump context
NULL, // exit callback
NULL, // exit context
false, // generate dumps
""); // dump path
ASSERT_TRUE(server.Start());
ASSERT_TRUE(server.Stop());
}
@ -111,6 +115,8 @@ TEST_F(CrashGenerationServerTest, testStartStopServer) {
// Test without actually dumping
TEST_F(CrashGenerationServerTest, testRequestDumpNoDump) {
CrashGenerationServer server(mach_port_name,
NULL, // filter callback
NULL, // filter context
NULL, // dump callback
NULL, // dump context
NULL, // exit callback
@ -142,7 +148,7 @@ TEST_F(CrashGenerationServerTest, testRequestDumpNoDump) {
}
void dumpCallback(void *context, const ClientInfo &client_info,
const std::string &file_path) {
const std::string &file_path) {
if (context) {
CrashGenerationServerTest* self =
reinterpret_cast<CrashGenerationServerTest*>(context);
@ -161,6 +167,8 @@ void *RequestDump(void *context) {
// Test that actually writing a minidump works
TEST_F(CrashGenerationServerTest, testRequestDump) {
CrashGenerationServer server(mach_port_name,
NULL, // filter callback
NULL, // filter context
dumpCallback, // dump callback
this, // dump context
NULL, // exit callback
@ -209,6 +217,8 @@ static void Crasher() {
// the parent.
TEST_F(CrashGenerationServerTest, testChildProcessCrash) {
CrashGenerationServer server(mach_port_name,
NULL, // filter callback
NULL, // filter context
dumpCallback, // dump callback
this, // dump context
NULL, // exit callback
@ -270,6 +280,8 @@ TEST_F(CrashGenerationServerTest, testChildProcessCrash) {
// produces a valid minidump.
TEST_F(CrashGenerationServerTest, testChildProcessCrashCrossArchitecture) {
CrashGenerationServer server(mach_port_name,
NULL, // filter callback
NULL, // filter context
dumpCallback, // dump callback
this, // dump context
NULL, // exit callback
@ -342,4 +354,45 @@ const u_int32_t kExpectedContext =
}
#endif
bool filter_callback(void* context) {
CrashGenerationServerTest* self =
reinterpret_cast<CrashGenerationServerTest*>(context);
self->filter_callback_called = true;
// veto dump generation
return false;
}
// Test that a filter callback can veto minidump writing.
TEST_F(CrashGenerationServerTest, testFilter) {
CrashGenerationServer server(mach_port_name,
filter_callback, // filter callback
this, // filter context
dumpCallback, // dump callback
this, // dump context
NULL, // exit callback
NULL, // exit context
true, // generate dumps
temp_dir.path()); // dump path
ASSERT_TRUE(server.Start());
pid_t pid = fork();
ASSERT_NE(-1, pid);
if (pid == 0) {
// Instantiate an OOP exception handler.
ExceptionHandler eh("", NULL, NULL, NULL, true, mach_port_name);
Crasher();
// not reached
exit(0);
}
int ret;
ASSERT_EQ(pid, waitpid(pid, &ret, 0));
EXPECT_FALSE(WIFEXITED(ret));
EXPECT_TRUE(server.Stop());
// check that no minidump was written
EXPECT_TRUE(last_dump_name.empty());
EXPECT_TRUE(filter_callback_called);
}
} // namespace