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Unified Diff: src/log.cc

Issue 366883004: Revert "Reland "Linux perf tool support update + refactoring." (r22118)" (Closed) Base URL: https://v8.googlecode.com/svn/branches/bleeding_edge
Patch Set: Created 6 years, 6 months ago
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Index: src/log.cc
diff --git a/src/log.cc b/src/log.cc
index b410ab8ca10545b2964945e9fa7a9f707b26dfe6..6d88a535dc78f4ce10ce7a578d56d1b7b32b4e7c 100644
--- a/src/log.cc
+++ b/src/log.cc
@@ -15,7 +15,6 @@
#include "src/log.h"
#include "src/log-utils.h"
#include "src/macro-assembler.h"
-#include "src/perf-jit.h"
#include "src/runtime-profiler.h"
#include "src/serialize.h"
#include "src/string-stream.h"
@@ -290,6 +289,172 @@ void PerfBasicLogger::LogRecordedBuffer(Code* code,
}
+// Linux perf tool logging support
+class PerfJitLogger : public CodeEventLogger {
+ public:
+ PerfJitLogger();
+ virtual ~PerfJitLogger();
+
+ virtual void CodeMoveEvent(Address from, Address to) { }
+ virtual void CodeDisableOptEvent(Code* code, SharedFunctionInfo* shared) { }
+ virtual void CodeDeleteEvent(Address from) { }
+
+ private:
+ virtual void LogRecordedBuffer(Code* code,
+ SharedFunctionInfo* shared,
+ const char* name,
+ int length);
+
+ // Extension added to V8 log file name to get the low-level log name.
+ static const char kFilenameFormatString[];
+ static const int kFilenameBufferPadding;
+
+ // File buffer size of the low-level log. We don't use the default to
+ // minimize the associated overhead.
+ static const int kLogBufferSize = 2 * MB;
+
+ void LogWriteBytes(const char* bytes, int size);
+ void LogWriteHeader();
+
+ static const uint32_t kJitHeaderMagic = 0x4F74496A;
+ static const uint32_t kJitHeaderVersion = 0x2;
+ static const uint32_t kElfMachIA32 = 3;
+ static const uint32_t kElfMachX64 = 62;
+ static const uint32_t kElfMachARM = 40;
+ static const uint32_t kElfMachMIPS = 10;
+ static const uint32_t kElfMachX87 = 3;
+
+ struct jitheader {
+ uint32_t magic;
+ uint32_t version;
+ uint32_t total_size;
+ uint32_t elf_mach;
+ uint32_t pad1;
+ uint32_t pid;
+ uint64_t timestamp;
+ };
+
+ enum jit_record_type {
+ JIT_CODE_LOAD = 0
+ // JIT_CODE_UNLOAD = 1,
+ // JIT_CODE_CLOSE = 2,
+ // JIT_CODE_DEBUG_INFO = 3,
+ // JIT_CODE_PAGE_MAP = 4,
+ // JIT_CODE_MAX = 5
+ };
+
+ struct jr_code_load {
+ uint32_t id;
+ uint32_t total_size;
+ uint64_t timestamp;
+ uint64_t vma;
+ uint64_t code_addr;
+ uint32_t code_size;
+ uint32_t align;
+ };
+
+ uint32_t GetElfMach() {
+#if V8_TARGET_ARCH_IA32
+ return kElfMachIA32;
+#elif V8_TARGET_ARCH_X64
+ return kElfMachX64;
+#elif V8_TARGET_ARCH_ARM
+ return kElfMachARM;
+#elif V8_TARGET_ARCH_MIPS
+ return kElfMachMIPS;
+#elif V8_TARGET_ARCH_X87
+ return kElfMachX87;
+#else
+ UNIMPLEMENTED();
+ return 0;
+#endif
+ }
+
+ FILE* perf_output_handle_;
+};
+
+const char PerfJitLogger::kFilenameFormatString[] = "/tmp/jit-%d.dump";
+
+// Extra padding for the PID in the filename
+const int PerfJitLogger::kFilenameBufferPadding = 16;
+
+PerfJitLogger::PerfJitLogger()
+ : perf_output_handle_(NULL) {
+ // Open the perf JIT dump file.
+ int bufferSize = sizeof(kFilenameFormatString) + kFilenameBufferPadding;
+ ScopedVector<char> perf_dump_name(bufferSize);
+ int size = SNPrintF(
+ perf_dump_name,
+ kFilenameFormatString,
+ base::OS::GetCurrentProcessId());
+ CHECK_NE(size, -1);
+ perf_output_handle_ =
+ base::OS::FOpen(perf_dump_name.start(), base::OS::LogFileOpenMode);
+ CHECK_NE(perf_output_handle_, NULL);
+ setvbuf(perf_output_handle_, NULL, _IOFBF, kLogBufferSize);
+
+ LogWriteHeader();
+}
+
+
+PerfJitLogger::~PerfJitLogger() {
+ fclose(perf_output_handle_);
+ perf_output_handle_ = NULL;
+}
+
+
+void PerfJitLogger::LogRecordedBuffer(Code* code,
+ SharedFunctionInfo*,
+ const char* name,
+ int length) {
+ ASSERT(code->instruction_start() == code->address() + Code::kHeaderSize);
+ ASSERT(perf_output_handle_ != NULL);
+
+ const char* code_name = name;
+ uint8_t* code_pointer = reinterpret_cast<uint8_t*>(code->instruction_start());
+ uint32_t code_size = code->instruction_size();
+
+ static const char string_terminator[] = "\0";
+
+ jr_code_load code_load;
+ code_load.id = JIT_CODE_LOAD;
+ code_load.total_size = sizeof(code_load) + length + 1 + code_size;
+ code_load.timestamp =
+ static_cast<uint64_t>(base::OS::TimeCurrentMillis() * 1000.0);
+ code_load.vma = 0x0; // Our addresses are absolute.
+ code_load.code_addr = reinterpret_cast<uint64_t>(code->instruction_start());
+ code_load.code_size = code_size;
+ code_load.align = 0;
+
+ LogWriteBytes(reinterpret_cast<const char*>(&code_load), sizeof(code_load));
+ LogWriteBytes(code_name, length);
+ LogWriteBytes(string_terminator, 1);
+ LogWriteBytes(reinterpret_cast<const char*>(code_pointer), code_size);
+}
+
+
+void PerfJitLogger::LogWriteBytes(const char* bytes, int size) {
+ size_t rv = fwrite(bytes, 1, size, perf_output_handle_);
+ ASSERT(static_cast<size_t>(size) == rv);
+ USE(rv);
+}
+
+
+void PerfJitLogger::LogWriteHeader() {
+ ASSERT(perf_output_handle_ != NULL);
+ jitheader header;
+ header.magic = kJitHeaderMagic;
+ header.version = kJitHeaderVersion;
+ header.total_size = sizeof(jitheader);
+ header.pad1 = 0xdeadbeef;
+ header.elf_mach = GetElfMach();
+ header.pid = base::OS::GetCurrentProcessId();
+ header.timestamp =
+ static_cast<uint64_t>(base::OS::TimeCurrentMillis() * 1000.0);
+ LogWriteBytes(reinterpret_cast<const char*>(&header), sizeof(header));
+}
+
+
// Low-level logging support.
#define LL_LOG(Call) if (ll_logger_) ll_logger_->Call;
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