From 57841074b922cb48260b094721bcc690a5c5cd27 Mon Sep 17 00:00:00 2001
From: Vladimir Dubrovin <3proxy@3proxy.ru>
Date: Wed, 16 Apr 2025 21:29:48 +0300
Subject: [PATCH] Avoid sleep on service thread sync

---
 src/3proxy.c     |  8 ++++++++
 src/common.c     |  3 ++-
 src/conf.c       | 11 +++++++++--
 src/proxymain.c  | 15 ++++++++++++---
 src/structures.h |  7 ++++++-
 5 files changed, 37 insertions(+), 7 deletions(-)

diff --git a/src/3proxy.c b/src/3proxy.c
index 9082f50..70b1bbb 100644
--- a/src/3proxy.c
+++ b/src/3proxy.c
@@ -521,6 +521,14 @@ int WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPWSTR lpCmdLine, int
 #ifndef NORADIUS
   pthread_mutex_init(&rad_mutex, NULL);
 #endif
+#ifdef _WIN32
+  if(!CreatePipe(&conf.threadinit[0], &conf.threadinit[1], NULL, 1)){
+#else
+  if(pipe(conf.threadinit)) {
+#endif
+    fprintf(stderr, "CreatePipe failed\n");
+    return 1;
+  };
 
   freeconf(&conf);
   res = readconfig(fp);
diff --git a/src/common.c b/src/common.c
index ec25eb6..abffdf2 100644
--- a/src/common.c
+++ b/src/common.c
@@ -93,6 +93,7 @@ char *rotations[] = {
 
 
 struct extparam conf = {
+	{0, 0},
 	{1, 5, 30, 60, 180, 1800, 15, 60, 15, 5, 0, 0},
 	NULL,
 	NULL,
@@ -101,7 +102,7 @@ struct extparam conf = {
 	NULL,
 	NULL,
 	0,
-	0, -1, 0, 0, 0, 0, 
+	-1, 0, 0, 0, 0, 
 	0, 500, 0, 0, 0, 0, 0, 0, 2,
 	0, 0, 0,
 	6, 600,
diff --git a/src/conf.c b/src/conf.c
index 2a39aad..39219ac 100644
--- a/src/conf.c
+++ b/src/conf.c
@@ -150,8 +150,8 @@ int start_proxy_thread(struct child * chp){
 #ifdef _WIN32
   HANDLE h;
 #endif
+  char r[1];
 
-	conf.threadinit = 1;
 #ifdef _WIN32
 #ifndef _WINCE
 	h = (HANDLE)_beginthreadex((LPSECURITY_ATTRIBUTES )NULL, 16384+conf.stacksize, (void *)startsrv, (void *) chp, (DWORD)0, &thread);
@@ -166,7 +166,14 @@ int start_proxy_thread(struct child * chp){
 	pthread_create(&thread, &pa, startsrv, (void *)chp);
 	pthread_attr_destroy(&pa);
 #endif
-	while(conf.threadinit)usleep(SLEEPTIME);
+#ifdef _WIN32
+	ReadFile(conf.threadinit[0], r, 1, NULL, NULL);
+#else
+	while(read(conf.threadinit[0], r, 1) !=1) if(errno != EINTR) {
+	    fprintf(stderr, "pipe failed\n");
+	    return 40;
+	}
+#endif
 	if(haveerror)  {
 		fprintf(stderr, "Service not started on line: %d%s\n", linenum, haveerror == 2? ": insufficient memory":"");
 		return(40);
diff --git a/src/proxymain.c b/src/proxymain.c
index 09828b9..2e11e97 100644
--- a/src/proxymain.c
+++ b/src/proxymain.c
@@ -115,6 +115,15 @@ void * threadfunc (void *p) {
 }
 #undef param
 
+int pushthreadinit(){
+    return 
+#ifdef _WIN32
+    WriteFile(conf.threadinit[1], "1", 1, NULL, NULL);
+#else
+    write(conf.threadinit[1], "1", 1);
+#endif
+}
+
 
 struct socketoptions sockopts[] = {
 #ifdef TCP_NODELAY
@@ -526,7 +535,7 @@ int MODULEMAINFUNC (int argc, char** argv){
 	if (error || i!=argc) {
 #ifndef STDMAIN
 		haveerror = 1;
-		conf.threadinit = 0;
+		pushthreadinit();
 #endif
 		fprintf(stderr, "%s of %s\n"
 			"Usage: %s options\n"
@@ -558,7 +567,7 @@ int MODULEMAINFUNC (int argc, char** argv){
 	if (error || argc != i+3 || *argv[i]=='-'|| (*SAPORT(&srv.intsa) = htons((unsigned short)atoi(argv[i])))==0 || (srv.targetport = htons((unsigned short)atoi(argv[i+2])))==0) {
 #ifndef STDMAIN
 		haveerror = 1;
-		conf.threadinit = 0;
+		pushthreadinit();
 #endif
 		fprintf(stderr, "%s of %s\n"
 			"Usage: %s options"
@@ -624,7 +633,7 @@ int MODULEMAINFUNC (int argc, char** argv){
 #ifndef STDMAIN
 
  copyfilter(conf.filters, &srv);
- conf.threadinit = 0;
+ pushthreadinit();
 
 
 #endif
diff --git a/src/structures.h b/src/structures.h
index 6f175f7..786d301 100644
--- a/src/structures.h
+++ b/src/structures.h
@@ -632,6 +632,11 @@ struct filemon {
 
 
 struct extparam {
+#ifdef _WIN32
+	HANDLE threadinit[2];
+#else
+	int threadinit[2];
+#endif
 	int timeouts[12];
 	struct ace * acl;
 	char * conffile;
@@ -640,7 +645,7 @@ struct extparam {
 	struct trafcount * trafcounter;
 	struct srvparam *services;
 	int stacksize,
-		threadinit, counterd, haveerror, rotate, paused, archiverc,
+		counterd, haveerror, rotate, paused, archiverc,
 		demon, maxchild, backlog, needreload, timetoexit, version, noforce, bandlimver, parentretries;
 	int authcachetype, authcachetime;
 	int filtermaxsize;