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srs/trunk/src/main/srs_main_server.cpp
winlin 1f621a6db3 Remove dead code: memory watch
2021-02-19 18:53:40 +08:00

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/**
* The MIT License (MIT)
*
* Copyright (c) 2013-2020 Winlin
*
* Permission is hereby granted, free of charge, to any person obtaining a copy of
* this software and associated documentation files (the "Software"), to deal in
* the Software without restriction, including without limitation the rights to
* use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of
* the Software, and to permit persons to whom the Software is furnished to do so,
* subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in all
* copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
* FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
* COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
* IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*/
#include <srs_core.hpp>
#include <stdlib.h>
#include <sys/types.h>
#include <sys/wait.h>
#include <sstream>
using namespace std;
#ifdef SRS_GPERF_MP
#include <gperftools/heap-profiler.h>
#endif
#ifdef SRS_GPERF_CP
#include <gperftools/profiler.h>
#endif
#ifdef SRS_GPERF
#include <gperftools/malloc_extension.h>
#endif
#include <unistd.h>
using namespace std;
#include <srs_kernel_error.hpp>
#include <srs_app_server.hpp>
#include <srs_app_config.hpp>
#include <srs_app_log.hpp>
#include <srs_kernel_utility.hpp>
#include <srs_core_performance.hpp>
#include <srs_app_utility.hpp>
#include <srs_core_autofree.hpp>
#include <srs_kernel_file.hpp>
#include <srs_app_hybrid.hpp>
#ifdef SRS_RTC
#include <srs_app_rtc_conn.hpp>
#include <srs_app_rtc_server.hpp>
#endif
#ifdef SRS_SRT
#include <srt_server.hpp>
#endif
// pre-declare
srs_error_t run_directly_or_daemon();
srs_error_t run_hybrid_server();
void show_macro_features();
// @global log and context.
ISrsLog* _srs_log = new SrsFileLog();
ISrsContext* _srs_context = new SrsThreadContext();
// @global config object for app module.
SrsConfig* _srs_config = new SrsConfig();
// @global version of srs, which can grep keyword "XCORE"
extern const char* _srs_version;
// @global main SRS server, for debugging
SrsServer* _srs_server = NULL;
/**
* main entrance.
*/
srs_error_t do_main(int argc, char** argv)
{
srs_error_t err = srs_success;
// TODO: support both little and big endian.
srs_assert(srs_is_little_endian());
// For RTC to generating random ICE username.
::srandom((unsigned long)(srs_update_system_time() | (::getpid()<<13)));
// for gperf gmp or gcp,
// should never enable it when not enabled for performance issue.
#ifdef SRS_GPERF_MP
HeapProfilerStart("gperf.srs.gmp");
#endif
#ifdef SRS_GPERF_CP
ProfilerStart("gperf.srs.gcp");
#endif
// directly compile error when these two macro defines.
#if defined(SRS_GPERF_MC) && defined(SRS_GPERF_MP)
#error ("option --with-gmc confict with --with-gmp, "
"@see: http://google-perftools.googlecode.com/svn/trunk/doc/heap_checker.html\n"
"Note that since the heap-checker uses the heap-profiling framework internally, "
"it is not possible to run both the heap-checker and heap profiler at the same time");
#endif
// never use gmp to check memory leak.
#ifdef SRS_GPERF_MP
#warning "gmp is not used for memory leak, please use gmc instead."
#endif
// never use srs log(srs_trace, srs_error, etc) before config parse the option,
// which will load the log config and apply it.
if ((err = _srs_config->parse_options(argc, argv)) != srs_success) {
return srs_error_wrap(err, "config parse options");
}
// change the work dir and set cwd.
int r0 = 0;
string cwd = _srs_config->get_work_dir();
if (!cwd.empty() && cwd != "./" && (r0 = chdir(cwd.c_str())) == -1) {
return srs_error_new(-1, "chdir to %s, r0=%d", cwd.c_str(), r0);
}
if ((err = _srs_config->initialize_cwd()) != srs_success) {
return srs_error_wrap(err, "config cwd");
}
// config parsed, initialize log.
if ((err = _srs_log->initialize()) != srs_success) {
return srs_error_wrap(err, "log initialize");
}
// config already applied to log.
srs_trace2(TAG_MAIN, "%s, %s", RTMP_SIG_SRS_SERVER, RTMP_SIG_SRS_LICENSE);
srs_trace("authors: %s", RTMP_SIG_SRS_AUTHORS);
srs_trace("contributors: %s", SRS_CONSTRIBUTORS);
srs_trace("cwd=%s, work_dir=%s, build: %s, configure: %s, uname: %s, osx: %d",
_srs_config->cwd().c_str(), cwd.c_str(), SRS_BUILD_DATE, SRS_USER_CONFIGURE, SRS_UNAME, SRS_OSX_BOOL);
srs_trace("configure detail: " SRS_CONFIGURE);
#ifdef SRS_EMBEDED_TOOL_CHAIN
srs_trace("crossbuild tool chain: " SRS_EMBEDED_TOOL_CHAIN);
#endif
// for memory check or detect.
if (true) {
stringstream ss;
#ifdef SRS_PERF_GLIBC_MEMORY_CHECK
// ensure glibc write error to stderr.
string lfsov = srs_getenv("LIBC_FATAL_STDERR_");
setenv("LIBC_FATAL_STDERR_", "1", 1);
string lfsnv = srs_getenv("LIBC_FATAL_STDERR_");
//
// ensure glibc to do alloc check.
string mcov = srs_getenv("MALLOC_CHECK_");
setenv("MALLOC_CHECK_", "1", 1);
string mcnv = srs_getenv("MALLOC_CHECK_");
ss << "glic mem-check env MALLOC_CHECK_ " << mcov << "=>" << mcnv << ", LIBC_FATAL_STDERR_ " << lfsov << "=>" << lfsnv << ".";
#endif
#ifdef SRS_GPERF_MC
string hcov = srs_getenv("HEAPCHECK");
if (hcov.empty()) {
string cpath = _srs_config->config();
srs_warn("gmc HEAPCHECK is required, for example: env HEAPCHECK=normal ./objs/srs -c %s", cpath.c_str());
} else {
ss << "gmc env HEAPCHECK=" << hcov << ".";
}
#endif
#ifdef SRS_GPERF_MD
char* TCMALLOC_PAGE_FENCE = getenv("TCMALLOC_PAGE_FENCE");
if (!TCMALLOC_PAGE_FENCE || strcmp(TCMALLOC_PAGE_FENCE, "1")) {
srs_warn("gmd enabled without env TCMALLOC_PAGE_FENCE=1");
} else {
ss << "gmd env TCMALLOC_PAGE_FENCE=" << TCMALLOC_PAGE_FENCE << ".";
}
#endif
string sss = ss.str();
if (!sss.empty()) {
srs_trace(sss.c_str());
}
}
// we check the config when the log initialized.
if ((err = _srs_config->check_config()) != srs_success) {
return srs_error_wrap(err, "check config");
}
// features
show_macro_features();
#ifdef SRS_GPERF
// For tcmalloc, use slower release rate.
if (true) {
double trr = _srs_config->tcmalloc_release_rate();
double otrr = MallocExtension::instance()->GetMemoryReleaseRate();
MallocExtension::instance()->SetMemoryReleaseRate(trr);
srs_trace("tcmalloc: set release-rate %.2f=>%.2f", otrr, trr);
}
#endif
if ((err = run_directly_or_daemon()) != srs_success) {
return srs_error_wrap(err, "run");
}
return err;
}
int main(int argc, char** argv) {
// For background context id.
_srs_context->set_id(_srs_context->generate_id());
srs_error_t err = do_main(argc, argv);
if (err != srs_success) {
srs_error("Failed, %s", srs_error_desc(err).c_str());
}
int ret = srs_error_code(err);
srs_freep(err);
return ret;
}
/**
* show the features by macro, the actual macro values.
*/
void show_macro_features()
{
if (true) {
stringstream ss;
ss << "features";
// rch(rtmp complex handshake)
ss << ", rch:" << srs_bool2switch(true);
ss << ", dash:" << "on";
ss << ", hls:" << srs_bool2switch(true);
ss << ", hds:" << srs_bool2switch(SRS_HDS_BOOL);
ss << ", srt:" << srs_bool2switch(SRS_SRT_BOOL);
// hc(http callback)
ss << ", hc:" << srs_bool2switch(true);
// ha(http api)
ss << ", ha:" << srs_bool2switch(true);
// hs(http server)
ss << ", hs:" << srs_bool2switch(true);
// hp(http parser)
ss << ", hp:" << srs_bool2switch(true);
ss << ", dvr:" << srs_bool2switch(true);
// trans(transcode)
ss << ", trans:" << srs_bool2switch(true);
// inge(ingest)
ss << ", inge:" << srs_bool2switch(true);
ss << ", stat:" << srs_bool2switch(true);
// sc(stream-caster)
ss << ", sc:" << srs_bool2switch(true);
srs_trace(ss.str().c_str());
}
if (true) {
stringstream ss;
ss << "SRS on ";
#if defined(__amd64__)
ss << " amd64";
#endif
#if defined(__x86_64__)
ss << " x86_64";
#endif
#if defined(__i386__)
ss << " i386";
#endif
#if defined(__arm__)
ss << "arm";
#endif
#if defined(__aarch64__)
ss << " aarch64";
#endif
#if defined(SRS_CROSSBUILD)
ss << "(crossbuild)";
#endif
ss << ", conf:" << _srs_config->config() << ", limit:" << _srs_config->get_max_connections()
<< ", writev:" << sysconf(_SC_IOV_MAX) << ", encoding:" << (srs_is_little_endian()? "little-endian":"big-endian")
<< ", HZ:" << (int)sysconf(_SC_CLK_TCK);
srs_trace(ss.str().c_str());
}
if (true) {
stringstream ss;
// mw(merged-write)
ss << "mw sleep:" << srsu2msi(SRS_PERF_MW_SLEEP) << "ms";
// mr(merged-read)
ss << ". mr ";
#ifdef SRS_PERF_MERGED_READ
ss << "enabled:on";
#else
ss << "enabled:off";
#endif
ss << ", default:" << SRS_PERF_MR_ENABLED << ", sleep:" << srsu2msi(SRS_PERF_MR_SLEEP) << "ms";
srs_trace(ss.str().c_str());
}
if (true) {
stringstream ss;
// gc(gop-cache)
ss << "gc:" << srs_bool2switch(SRS_PERF_GOP_CACHE);
// pq(play-queue)
ss << ", pq:" << srsu2msi(SRS_PERF_PLAY_QUEUE) << "ms";
// cscc(chunk stream cache cid)
ss << ", cscc:[0," << SRS_PERF_CHUNK_STREAM_CACHE << ")";
// csa(complex send algorithm)
ss << ", csa:";
#ifndef SRS_PERF_COMPLEX_SEND
ss << "off";
#else
ss << "on";
#endif
// tn(TCP_NODELAY)
ss << ", tn:";
#ifdef SRS_PERF_TCP_NODELAY
ss << "on(may hurts performance)";
#else
ss << "off";
#endif
// ss(SO_SENDBUF)
ss << ", ss:";
#ifdef SRS_PERF_SO_SNDBUF_SIZE
ss << SRS_PERF_SO_SNDBUF_SIZE;
#else
ss << "auto(guess by merged write)";
#endif
srs_trace(ss.str().c_str());
}
// others
int possible_mr_latency = 0;
#ifdef SRS_PERF_MERGED_READ
possible_mr_latency = srsu2msi(SRS_PERF_MR_SLEEP);
#endif
srs_trace("system default latency(ms): mw(0-%d) + mr(0-%d) + play-queue(0-%d)",
srsu2msi(SRS_PERF_MW_SLEEP), possible_mr_latency, srsu2msi(SRS_PERF_PLAY_QUEUE));
#if VERSION_MAJOR > VERSION_STABLE
#warning "Current branch is not stable."
srs_warn("%s/%s is not stable", RTMP_SIG_SRS_KEY, RTMP_SIG_SRS_VERSION);
#endif
#if defined(SRS_PERF_SO_SNDBUF_SIZE) && !defined(SRS_PERF_MW_SO_SNDBUF)
#error "SRS_PERF_SO_SNDBUF_SIZE depends on SRS_PERF_MW_SO_SNDBUF"
#endif
}
// Detect docker by https://stackoverflow.com/a/41559867
bool _srs_in_docker = false;
srs_error_t srs_detect_docker()
{
srs_error_t err = srs_success;
_srs_in_docker = false;
SrsFileReader fr;
if ((err = fr.open("/proc/1/cgroup")) != srs_success) {
return err;
}
ssize_t nn;
char buf[1024];
if ((err = fr.read(buf, sizeof(buf), &nn)) != srs_success) {
return err;
}
if (nn <= 0) {
return err;
}
string s(buf, nn);
if (srs_string_contains(s, "/docker")) {
_srs_in_docker = true;
}
return err;
}
srs_error_t run_directly_or_daemon()
{
srs_error_t err = srs_success;
// Ignore any error while detecting docker.
if ((err = srs_detect_docker()) != srs_success) {
srs_error_reset(err);
}
// Load daemon from config, disable it for docker.
// @see https://github.com/ossrs/srs/issues/1594
bool run_as_daemon = _srs_config->get_daemon();
if (run_as_daemon && _srs_in_docker && _srs_config->disable_daemon_for_docker()) {
srs_warn("disable daemon for docker");
run_as_daemon = false;
}
// If not daemon, directly run hybrid server.
if (!run_as_daemon) {
if ((err = run_hybrid_server()) != srs_success) {
return srs_error_wrap(err, "run hybrid");
}
return srs_success;
}
srs_trace("start daemon mode...");
int pid = fork();
if(pid < 0) {
return srs_error_new(-1, "fork father process");
}
// grandpa
if(pid > 0) {
int status = 0;
waitpid(pid, &status, 0);
srs_trace("grandpa process exit.");
exit(0);
}
// father
pid = fork();
if(pid < 0) {
return srs_error_new(-1, "fork child process");
}
if(pid > 0) {
srs_trace("father process exit");
exit(0);
}
// son
srs_trace("son(daemon) process running.");
if ((err = run_hybrid_server()) != srs_success) {
return srs_error_wrap(err, "daemon run hybrid");
}
return err;
}
srs_error_t run_hybrid_server()
{
srs_error_t err = srs_success;
// Create servers and register them.
_srs_hybrid->register_server(new SrsServerAdapter());
#ifdef SRS_SRT
_srs_hybrid->register_server(new SrtServerAdapter());
#endif
#ifdef SRS_RTC
_srs_hybrid->register_server(new RtcServerAdapter());
#endif
// Do some system initialize.
if ((err = _srs_hybrid->initialize()) != srs_success) {
return srs_error_wrap(err, "hybrid initialize");
}
// Should run util hybrid servers all done.
if ((err = _srs_hybrid->run()) != srs_success) {
return srs_error_wrap(err, "hybrid run");
}
// After all done, stop and cleanup.
_srs_hybrid->stop();
return err;
}
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