chore: import upstream snapshot with attribution

2026-07-13 13:33:03 +08:00
commit 5b57521aa1
8226 changed files with 3425766 additions and 0 deletions
@@ -0,0 +1,71 @@
+//
+//  AutoTime.cpp
+//  MNN
+//
+//  Created by MNN on 2018/07/14.
+//  Copyright © 2018, Alibaba Group Holding Limited
+//
+
+#include <stdlib.h>
+#include <string.h>
+#if defined(_MSC_VER)
+#include <Windows.h>
+#else
+#include <sys/time.h>
+#endif
+#include <MNN/AutoTime.hpp>
+#include "core/Macro.h"
+
+namespace MNN {
+
+Timer::Timer() {
+    reset();
+}
+
+Timer::~Timer() {
+    // do nothing
+}
+
+void Timer::reset() {
+#if defined(_MSC_VER)
+    LARGE_INTEGER time, freq;
+    QueryPerformanceFrequency(&freq);
+    QueryPerformanceCounter(&time);
+    uint64_t sec   = time.QuadPart / freq.QuadPart;
+    uint64_t usec  = (time.QuadPart % freq.QuadPart) * 1000000 / freq.QuadPart;
+    mLastResetTime = sec * 1000000 + usec;
+#else
+    struct timeval Current;
+    gettimeofday(&Current, nullptr);
+    mLastResetTime = Current.tv_sec * 1000000 + Current.tv_usec;
+#endif
+}
+
+uint64_t Timer::durationInUs() {
+#if defined(_MSC_VER)
+    LARGE_INTEGER time, freq;
+    QueryPerformanceCounter(&time);
+    QueryPerformanceFrequency(&freq);
+    uint64_t sec  = time.QuadPart / freq.QuadPart;
+    uint64_t usec = (time.QuadPart % freq.QuadPart) * 1000000 / freq.QuadPart;
+    auto lastTime = sec * 1000000 + usec;
+#else
+    struct timeval Current;
+    gettimeofday(&Current, nullptr);
+    auto lastTime = Current.tv_sec * 1000000 + Current.tv_usec;
+#endif
+
+    return lastTime - mLastResetTime;
+}
+
+AutoTime::AutoTime(int line, const char* func) : Timer() {
+    mName = ::strdup(func);
+    mLine = line;
+}
+AutoTime::~AutoTime() {
+    auto timeInUs = durationInUs();
+    MNN_PRINT("%s, %d, cost time: %f ms\n", mName, mLine, (float)timeInUs / 1000.0f);
+    free(mName);
+}
+
+} // namespace MNN