char-server now offloads file writes to a child process

Should see a massive speedup as it's now free to do other things.
If processes start piling up, decrease the save frequency.

2 files changed, 18 insertions, 1 deletions

diff --git a/src/char/char.c b/src/char/char.c
index 37580b6..08ad642 100644
--- a/src/char/char.c
+++ b/src/char/char.c
@@ -720,8 +720,20 @@ void mmo_char_sync(void) {
 // Function to save (in a periodic way) datas in files
 //----------------------------------------------------
 int mmo_char_sync_timer(int tid, unsigned int tick, int id, int data) {
+	pid_t pid;
+
+	// This can take a lot of time. Fork a child to handle the work and return at once
+	// If we're unable to fork just continue running the function normally
+	if ((pid = fork()) > 0)
+		return 0;
+
 	mmo_char_sync();
 	inter_save();
+
+	// If we're a child we should suicide now.
+	if (pid == 0)
+		exit(0);
+
 	return 0;
 }
 
diff --git a/src/common/core.c b/src/common/core.c
index 2546f4e..7267d8f 100644
--- a/src/common/core.c
+++ b/src/common/core.c
@@ -7,6 +7,7 @@
 #include <unistd.h>
 #endif
 #include <signal.h>
+#include <wait.h>
 
 #include "core.h"
 #include "socket.h"
@@ -48,6 +49,9 @@ static void sig_proc(int sn)
 		}
 		exit(0);
 		break;
+	case SIGCHLD:
+		wait(&i);
+		break;
 	}
 }
 
@@ -135,7 +139,8 @@ int main(int argc,char **argv)
 	compat_signal(SIGPIPE,SIG_IGN);
 	compat_signal(SIGTERM,sig_proc);
 	compat_signal(SIGINT,sig_proc);
-	
+	compat_signal(SIGCHLD,sig_proc);
+
 	// Signal to create coredumps by system when necessary (crash)
 	compat_signal(SIGSEGV, SIG_DFL);
 #ifndef LCCWIN32