skia2/tools/trace/EventTracingPriv.cpp
Mike Klein c0bd9f9fe5 rewrite includes to not need so much -Ifoo
Current strategy: everything from the top

Things to look at first are the manual changes:

   - added tools/rewrite_includes.py
   - removed -Idirectives from BUILD.gn
   - various compile.sh simplifications
   - tweak tools/embed_resources.py
   - update gn/find_headers.py to write paths from the top
   - update gn/gn_to_bp.py SkUserConfig.h layout
     so that #include "include/config/SkUserConfig.h" always
     gets the header we want.

No-Presubmit: true
Change-Id: I73a4b181654e0e38d229bc456c0d0854bae3363e
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/209706
Commit-Queue: Mike Klein <mtklein@google.com>
Reviewed-by: Hal Canary <halcanary@google.com>
Reviewed-by: Brian Osman <brianosman@google.com>
Reviewed-by: Florin Malita <fmalita@chromium.org>
2019-04-24 16:27:11 +00:00

89 lines
3.1 KiB
C++

/*
* Copyright 2017 Google Inc.
*
* Use of this source code is governed by a BSD-style license that can be
* found in the LICENSE file.
*/
#include "tools/trace/EventTracingPriv.h"
#include "include/utils/SkEventTracer.h"
#include "src/core/SkATrace.h"
#include "src/core/SkTraceEvent.h"
#include "tools/flags/CommandLineFlags.h"
#include "tools/trace/ChromeTracingTracer.h"
#include "tools/trace/SkDebugfTracer.h"
static DEFINE_string(trace,
"",
"Log trace events in one of several modes:\n"
" debugf : Show events using SkDebugf\n"
" atrace : Send events to Android ATrace\n"
" <filename> : Any other string is interpreted as a filename. Writes\n"
" trace events to specified file as JSON, for viewing\n"
" with chrome://tracing");
static DEFINE_string(traceMatch,
"",
"Filter which categories are traced.\n"
"Uses same format as --match\n");
void initializeEventTracingForTools(const char* traceFlag) {
if (!traceFlag) {
if (FLAGS_trace.isEmpty()) {
return;
}
traceFlag = FLAGS_trace[0];
}
SkEventTracer* eventTracer = nullptr;
if (0 == strcmp(traceFlag, "atrace")) {
eventTracer = new SkATrace();
} else if (0 == strcmp(traceFlag, "debugf")) {
eventTracer = new SkDebugfTracer();
} else {
eventTracer = new ChromeTracingTracer(traceFlag);
}
SkAssertResult(SkEventTracer::SetInstance(eventTracer));
}
uint8_t* SkEventTracingCategories::getCategoryGroupEnabled(const char* name) {
static_assert(0 == offsetof(CategoryState, fEnabled), "CategoryState");
// We ignore the "disabled-by-default-" prefix in our internal tools
if (SkStrStartsWith(name, TRACE_CATEGORY_PREFIX)) {
name += strlen(TRACE_CATEGORY_PREFIX);
}
// Chrome's implementation of this API does a two-phase lookup (once without a lock, then again
// with a lock. But the tracing macros avoid calling these functions more than once per site,
// so just do something simple (and easier to reason about):
SkAutoMutexAcquire lock(&fMutex);
for (int i = 0; i < fNumCategories; ++i) {
if (0 == strcmp(name, fCategories[i].fName)) {
return reinterpret_cast<uint8_t*>(&fCategories[i]);
}
}
if (fNumCategories >= kMaxCategories) {
SkDEBUGFAIL("Exhausted event tracing categories. Increase kMaxCategories.");
return reinterpret_cast<uint8_t*>(&fCategories[0]);
}
fCategories[fNumCategories].fEnabled =
CommandLineFlags::ShouldSkip(FLAGS_traceMatch, name)
? 0
: SkEventTracer::kEnabledForRecording_CategoryGroupEnabledFlags;
fCategories[fNumCategories].fName = name;
return reinterpret_cast<uint8_t*>(&fCategories[fNumCategories++]);
}
const char* SkEventTracingCategories::getCategoryGroupName(const uint8_t* categoryEnabledFlag) {
if (categoryEnabledFlag) {
return reinterpret_cast<const CategoryState*>(categoryEnabledFlag)->fName;
}
return nullptr;
}