SRS 6.0-b0 源码 + danmaku 后端（排除 objs/3rdparty/测试媒体）

2026-08-27 21:46:20 +08:00
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+//
+// Copyright (c) 2013-2025 Winlin
+//
+// SPDX-License-Identifier: MIT
+//
+/**
+@see: https://gperftools.github.io/gperftools/cpuprofile.html
+config srs with gperf(to make gperftools):
+    ./configure --with-gperf --jobs=3
+set the pprof path if not set:
+    export PPROF_PATH=`pwd`/../../../objs/pprof
+to do cpu profile:
+    make && rm -f ./srs.prof* && env CPUPROFILE=./srs.prof ./cpu_profiler
+    $PPROF_PATH --text cpu_profiler ./srs.prof*
+to do cpu profile by signal:
+    make && rm -f ./srs.prof* && env CPUPROFILE=./srs.prof CPUPROFILESIGNAL=12 ./cpu_profiler
+    $PPROF_PATH --text cpu_profiler ./srs.prof*
+*/
+#include <stdio.h>
+#include <unistd.h>
+#include <signal.h>
+#include <stdlib.h>
+
+#include <gperftools/profiler.h>
+
+void cpu_profile_imp() {
+    for (int i = 0; i < 2; ++i) {
+        for (int j = 0; j < 110 * 1024 * 1024; ++j) {
+        }
+        printf("cpu profile, loop 110M\n");
+        printf("press CTRL+C if you want to abort the program.\n");
+        sleep(3);
+    }
+}
+void cpu_profile() {
+    cpu_profile_imp();
+}
+
+void handler(int sig) {
+    exit(0);
+}
+int main(int argc, char** argv) {
+    signal(SIGINT, handler);
+    
+    // must start profiler manually.
+    ProfilerStart(NULL);
+    
+    if (getenv("CPUPROFILESIGNAL")) {
+        printf("if specified CPUPROFILESIGNAL, use signal to active it: kill -12 %d\n", getpid());
+        sleep(3);
+    }
+    
+    cpu_profile();
+    // not neccessary to call stop.
+    //ProfilerStop();
+    
+    return 0;
+}
+