diff options
Diffstat (limited to 'deps/v8/src/basic-block-profiler.cc')
-rw-r--r-- | deps/v8/src/basic-block-profiler.cc | 59 |
1 files changed, 45 insertions, 14 deletions
diff --git a/deps/v8/src/basic-block-profiler.cc b/deps/v8/src/basic-block-profiler.cc index deb1a532d01..eaecd5dc688 100644 --- a/deps/v8/src/basic-block-profiler.cc +++ b/deps/v8/src/basic-block-profiler.cc @@ -4,14 +4,28 @@ #include "src/basic-block-profiler.h" +#include <algorithm> +#include <numeric> #include <sstream> +#include "src/base/lazy-instance.h" + namespace v8 { namespace internal { -BasicBlockProfiler::Data::Data(size_t n_blocks) - : n_blocks_(n_blocks), block_ids_(n_blocks_), counts_(n_blocks_, 0) {} +namespace { +base::LazyInstance<BasicBlockProfiler>::type kBasicBlockProfiler = + LAZY_INSTANCE_INITIALIZER; +} +BasicBlockProfiler* BasicBlockProfiler::Get() { + return kBasicBlockProfiler.Pointer(); +} + +BasicBlockProfiler::Data::Data(size_t n_blocks) + : n_blocks_(n_blocks), + block_rpo_numbers_(n_blocks_), + counts_(n_blocks_, 0) {} BasicBlockProfiler::Data::~Data() {} @@ -20,31 +34,31 @@ static void InsertIntoString(std::ostringstream* os, std::string* string) { string->insert(0, os->str()); } +static void InsertIntoString(const char* data, std::string* string) { + string->insert(0, data); +} void BasicBlockProfiler::Data::SetCode(std::ostringstream* os) { InsertIntoString(os, &code_); } - -void BasicBlockProfiler::Data::SetFunctionName(std::ostringstream* os) { - InsertIntoString(os, &function_name_); +void BasicBlockProfiler::Data::SetFunctionName(std::unique_ptr<char[]> name) { + InsertIntoString(name.get(), &function_name_); } - void BasicBlockProfiler::Data::SetSchedule(std::ostringstream* os) { InsertIntoString(os, &schedule_); } - -void BasicBlockProfiler::Data::SetBlockId(size_t offset, size_t block_id) { +void BasicBlockProfiler::Data::SetBlockRpoNumber(size_t offset, + int32_t block_rpo) { DCHECK(offset < n_blocks_); - block_ids_[offset] = block_id; + block_rpo_numbers_[offset] = block_rpo; } - -uint32_t* BasicBlockProfiler::Data::GetCounterAddress(size_t offset) { +intptr_t BasicBlockProfiler::Data::GetCounterAddress(size_t offset) { DCHECK(offset < n_blocks_); - return &counts_[offset]; + return reinterpret_cast<intptr_t>(&(counts_[offset])); } @@ -59,6 +73,7 @@ BasicBlockProfiler::BasicBlockProfiler() {} BasicBlockProfiler::Data* BasicBlockProfiler::NewData(size_t n_blocks) { + base::LockGuard<base::Mutex> lock(&data_list_mutex_); Data* data = new Data(n_blocks); data_list_.push_back(data); return data; @@ -91,17 +106,33 @@ std::ostream& operator<<(std::ostream& os, const BasicBlockProfiler& p) { std::ostream& operator<<(std::ostream& os, const BasicBlockProfiler::Data& d) { + int block_count_sum = std::accumulate(d.counts_.begin(), d.counts_.end(), 0); + if (block_count_sum == 0) return os; const char* name = "unknown function"; if (!d.function_name_.empty()) { name = d.function_name_.c_str(); } if (!d.schedule_.empty()) { - os << "schedule for " << name << std::endl; + os << "schedule for " << name << " (B0 entered " << d.counts_[0] + << " times)" << std::endl; os << d.schedule_.c_str() << std::endl; } os << "block counts for " << name << ":" << std::endl; + std::vector<std::pair<int32_t, uint32_t>> pairs; + pairs.reserve(d.n_blocks_); for (size_t i = 0; i < d.n_blocks_; ++i) { - os << "block " << d.block_ids_[i] << " : " << d.counts_[i] << std::endl; + pairs.push_back(std::make_pair(d.block_rpo_numbers_[i], d.counts_[i])); + } + std::sort(pairs.begin(), pairs.end(), + [=](std::pair<int32_t, uint32_t> left, + std::pair<int32_t, uint32_t> right) { + if (right.second == left.second) + return left.first < right.first; + return right.second < left.second; + }); + for (auto it : pairs) { + if (it.second == 0) break; + os << "block B" << it.first << " : " << it.second << std::endl; } os << std::endl; if (!d.code_.empty()) { |