Remove trace_event.
trace_event is a feature to measure profiling.
However, it won't be usable in standard library like libchrome,
so remove it.
For build compatibility, small stub and trace_event_common.h
are kept.
Bug: 80375012
Test: Built locally.
Change-Id: Ie2a87d2fa0d3cdbd856044498d0dd2072da2e9ab
(Reconstructed from ad62a8245af1d123a106c870203a777260d231f8)
diff --git a/base/memory/shared_memory_posix.cc b/base/memory/shared_memory_posix.cc
index e1289e7..6b811b9 100644
--- a/base/memory/shared_memory_posix.cc
+++ b/base/memory/shared_memory_posix.cc
@@ -16,7 +16,8 @@
#include "base/logging.h"
#include "base/macros.h"
#include "base/memory/shared_memory_helper.h"
-#include "base/memory/shared_memory_tracker.h"
+// Unsupported in libchrome.
+// #include "base/memory/shared_memory_tracker.h"
#include "base/posix/eintr_wrapper.h"
#include "base/posix/safe_strerror.h"
#include "base/process/process_metrics.h"
@@ -302,7 +303,8 @@
DCHECK_EQ(0U,
reinterpret_cast<uintptr_t>(memory_) &
(SharedMemory::MAP_MINIMUM_ALIGNMENT - 1));
- SharedMemoryTracker::GetInstance()->IncrementMemoryUsage(*this);
+ // Unsupported in libchrome.
+ // SharedMemoryTracker::GetInstance()->IncrementMemoryUsage(*this);
} else {
memory_ = nullptr;
}
@@ -314,7 +316,8 @@
if (!memory_)
return false;
- SharedMemoryTracker::GetInstance()->DecrementMemoryUsage(*this);
+ // Unsupported in libchrome.
+ // SharedMemoryTracker::GetInstance()->DecrementMemoryUsage(*this);
munmap(memory_, mapped_size_);
memory_ = nullptr;
mapped_size_ = 0;
diff --git a/base/test/test_pending_task.cc b/base/test/test_pending_task.cc
index f9cfa8e..1000132 100644
--- a/base/test/test_pending_task.cc
+++ b/base/test/test_pending_task.cc
@@ -38,6 +38,8 @@
TestPendingTask::~TestPendingTask() = default;
+// Unsupported in libchrome.
+#if 0
void TestPendingTask::AsValueInto(base::trace_event::TracedValue* state) const {
state->SetInteger("run_at", GetTimeToRun().ToInternalValue());
state->SetString("posting_function", location.ToString());
@@ -61,10 +63,14 @@
AsValueInto(state.get());
return std::move(state);
}
+#endif
std::string TestPendingTask::ToString() const {
std::string output("TestPendingTask(");
+// Unsupported in libchrome.
+#if 0
AsValue()->AppendAsTraceFormat(&output);
+#endif
output += ")";
return output;
}
diff --git a/base/test/test_pending_task.h b/base/test/test_pending_task.h
index 460de0e..589070c 100644
--- a/base/test/test_pending_task.h
+++ b/base/test/test_pending_task.h
@@ -10,7 +10,8 @@
#include "base/callback.h"
#include "base/location.h"
#include "base/time/time.h"
-#include "base/trace_event/trace_event_argument.h"
+// Unsupported in libchrome.
+// #include "base/trace_event/trace_event_argument.h"
namespace base {
@@ -58,10 +59,13 @@
TimeDelta delay;
TestNestability nestability;
+// Unsupported in libchrome.
+#if 0
// Functions for using test pending task with tracing, useful in unit
// testing.
void AsValueInto(base::trace_event::TracedValue* state) const;
std::unique_ptr<base::trace_event::ConvertableToTraceFormat> AsValue() const;
+#endif
std::string ToString() const;
private:
diff --git a/base/threading/thread_id_name_manager.cc b/base/threading/thread_id_name_manager.cc
index c1065a9..1548828 100644
--- a/base/threading/thread_id_name_manager.cc
+++ b/base/threading/thread_id_name_manager.cc
@@ -12,7 +12,8 @@
#include "base/no_destructor.h"
#include "base/strings/string_util.h"
#include "base/threading/thread_local.h"
-#include "base/trace_event/heap_profiler_allocation_context_tracker.h"
+// Unsupported in libchrome.
+// #include "base/trace_event/heap_profiler_allocation_context_tracker.h"
namespace base {
namespace {
@@ -94,6 +95,8 @@
// call GetName(which holds a lock) during the first allocation because it can
// cause a deadlock when the first allocation happens in the
// ThreadIdNameManager itself when holding the lock.
+ // Unsupported in libchrome.
+ // trace_event::AllocationContextTracker::SetCurrentThreadName(
// leaked_str->c_str());
}
diff --git a/base/trace_event/heap_profiler.h b/base/trace_event/heap_profiler.h
index c8deaf6..cf12fec 100644
--- a/base/trace_event/heap_profiler.h
+++ b/base/trace_event/heap_profiler.h
@@ -5,6 +5,22 @@
#ifndef BASE_TRACE_EVENT_HEAP_PROFILER_H
#define BASE_TRACE_EVENT_HEAP_PROFILER_H
+// Replace with stub implementation.
+#if 1
+#define TRACE_HEAP_PROFILER_API_SCOPED_TASK_EXECUTION \
+ trace_event_internal::HeapProfilerScopedTaskExecutionTracker
+
+namespace trace_event_internal {
+
+class HeapProfilerScopedTaskExecutionTracker {
+ public:
+ explicit HeapProfilerScopedTaskExecutionTracker(const char*) {}
+};
+
+} // namespace trace_event_internal
+
+#else
+
#include "base/compiler_specific.h"
#include "base/trace_event/heap_profiler_allocation_context_tracker.h"
@@ -116,4 +132,5 @@
} // namespace trace_event_internal
+#endif
#endif // BASE_TRACE_EVENT_HEAP_PROFILER_H
diff --git a/base/trace_event/trace_event.h b/base/trace_event/trace_event.h
index 3c85b63..016c8ea 100644
--- a/base/trace_event/trace_event.h
+++ b/base/trace_event/trace_event.h
@@ -5,12 +5,49 @@
#ifndef BASE_TRACE_EVENT_TRACE_EVENT_H_
#define BASE_TRACE_EVENT_TRACE_EVENT_H_
+// Replace with stub implementation.
+#if 1
+#include "base/trace_event/common/trace_event_common.h"
+#include "base/trace_event/heap_profiler.h"
+
+// To avoid -Wunused-* errors, eat expression by macro.
+namespace libchrome_internal {
+template <typename... Args> void Ignore(Args&&... args) {}
+}
+#define INTERNAL_IGNORE(...) \
+ (false ? libchrome_internal::Ignore(__VA_ARGS__) : (void) 0)
+
+// Body is effectively empty.
+#define INTERNAL_TRACE_EVENT_ADD_SCOPED(...) INTERNAL_IGNORE(__VA_ARGS__)
+#define INTERNAL_TRACE_TASK_EXECUTION(...)
+#define INTERNAL_TRACE_EVENT_ADD_SCOPED_WITH_FLOW(...) \
+ INTERNAL_IGNORE(__VA_ARGS__)
+#define TRACE_ID_MANGLE(val) (val)
#define INTERNAL_TRACE_EVENT_GET_CATEGORY_INFO(...) INTERNAL_IGNORE(__VA_ARGS__)
#define INTERNAL_TRACE_EVENT_GET_CATEGORY_ENABLED(...) \
INTERNAL_IGNORE(__VA_ARGS__)
#define INTERNAL_TRACE_EVENT_CATEGORY_GROUP_ENABLED_FOR_RECORDING_MODE(...) \
false
#define INTERNAL_TRACE_EVENT_ADD(...) INTERNAL_IGNORE(__VA_ARGS__)
+
+namespace base {
+namespace trace_event {
+
+class TraceLog {
+ public:
+ static TraceLog* GetInstance() {
+ static TraceLog instance;
+ return &instance;
+ }
+
+ pid_t process_id() { return 0; }
+ void SetCurrentThreadBlocksMessageLoop() {}
+};
+
+} // namespace trace_event
+} // namespace base
+#else
+
// This header file defines implementation details of how the trace macros in
// trace_event_common.h collect and store trace events. Anything not
// implementation-specific should go in trace_event_common.h instead of here.
@@ -1194,4 +1231,5 @@
} // namespace trace_event
} // namespace base
+#endif
#endif // BASE_TRACE_EVENT_TRACE_EVENT_H_
