Extract key to avoid preemptive mallocs in insert/emplace in associative containers
Summary: This patch applies Duncan's work on __hash_table to __tree.
Reviewers: mclow.lists, dexonsmith
Subscribers: dexonsmith, cfe-commits
Differential Revision: http://reviews.llvm.org/D18637
git-svn-id: https://llvm.org/svn/llvm-project/libcxx/trunk@266491 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/test/support/assert_checkpoint.h b/test/support/assert_checkpoint.h
new file mode 100644
index 0000000..eea78ef
--- /dev/null
+++ b/test/support/assert_checkpoint.h
@@ -0,0 +1,62 @@
+#ifndef SUPPORT_ASSERT_CHECKPOINT_H
+#define SUPPORT_ASSERT_CHECKPOINT_H
+
+#include <csignal>
+#include <iostream>
+#include <cstdlib>
+
+struct Checkpoint {
+ const char* file;
+ const char* func;
+ int line;
+ const char* msg;
+
+ template <class Stream>
+ void print(Stream& s) const {
+ if (!file) {
+ s << "NO CHECKPOINT\n";
+ return;
+ }
+ s << file << ":" << line << " " << func << ": Checkpoint";
+ if (msg)
+ s << " '" << msg << "'";
+ s << std::endl;
+ }
+};
+
+inline Checkpoint& globalCheckpoint() {
+ static Checkpoint C;
+ return C;
+}
+
+inline void clearCheckpoint() {
+ globalCheckpoint() = Checkpoint{0};
+}
+
+#define CHECKPOINT(msg) globalCheckpoint() = Checkpoint{__FILE__, __PRETTY_FUNCTION__, __LINE__, msg}
+
+inline void checkpointSignalHandler(int signal) {
+ if (signal == SIGABRT) {
+ globalCheckpoint().print(std::cerr);
+ } else {
+ std::cerr << "Unexpected signal " << signal << " received\n";
+ }
+ std::_Exit(EXIT_FAILURE);
+}
+
+inline bool initCheckpointHandler() {
+ typedef void(*HandlerT)(int);
+ static bool isInit = false;
+ if (isInit) return true;
+ HandlerT prev_h = std::signal(SIGABRT, checkpointSignalHandler);
+ if (prev_h == SIG_ERR) {
+ std::cerr << "Setup failed.\n";
+ std::_Exit(EXIT_FAILURE);
+ }
+ isInit = true;
+ return false;
+}
+
+static bool initDummy = initCheckpointHandler();
+
+#endif