namespace Trace {
-LocalWriter::LocalWriter() {
+static void exceptionCallback(void)
+{
+ OS::DebugMessage("apitrace: flushing trace due to an exception\n");
+ localWriter.flush();
+}
+
+
+LocalWriter::LocalWriter() :
+ acquired(0)
+{}
+
+LocalWriter::~LocalWriter()
+{
+ OS::ResetExceptionCallback();
}
void
OS::DebugMessage("apitrace: tracing to %s\n", szFileName);
Writer::open(szFileName);
+
+ OS::SetExceptionCallback(exceptionCallback);
+
+#if 0
+ // For debugging the exception handler
+ *((int *)0) = 0;
+#endif
}
unsigned LocalWriter::beginEnter(const FunctionSig *sig) {
OS::AcquireMutex();
+ ++acquired;
if (!g_gzFile) {
open();
void LocalWriter::endEnter(void) {
Writer::endEnter();
- gzflush(g_gzFile, Z_SYNC_FLUSH);
+ --acquired;
OS::ReleaseMutex();
}
void LocalWriter::beginLeave(unsigned call) {
OS::AcquireMutex();
+ ++acquired;
Writer::beginLeave(call);
}
void LocalWriter::endLeave(void) {
Writer::endLeave();
- gzflush(g_gzFile, Z_SYNC_FLUSH);
+ --acquired;
OS::ReleaseMutex();
}
+void LocalWriter::flush(void) {
+ /*
+ * Do nothing if the mutex is already acquired (e.g., if a segfault happen
+ * while writing the file) to prevent dead-lock.
+ */
+
+ if (!acquired) {
+ OS::AcquireMutex();
+ if (g_gzFile) {
+ gzflush(g_gzFile, Z_SYNC_FLUSH);
+ }
+ OS::ReleaseMutex();
+ }
+}
+
LocalWriter localWriter;