Files @ r12087:0095f1069b29
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Location: cpp/openttd-patchpack/source/src/dedicated.cpp

yexo
(svn r16502) -Fix [FS#2935]: when an AI was suspended while in a function called (indirectly) via call/acall/pcall OpenTTD crashed. Fix this by disallowing AIs to be suspended while called via call/acall/pcall.
IMPORTANT FOR AI WRITERS: AIs can no longer call any DoCommand functions (change anything, build vehicles, etc.) in a function called (indirectly) via call/acall/pcall. Where possible, please rewrite your code so it doesn't use call/acall/pcall
/* $Id$ */

/** @file dedicated.cpp Forking support for dedicated servers. */

#include "stdafx.h"

#ifdef ENABLE_NETWORK

#if defined(UNIX) && !defined(__MORPHOS__)

#include "variables.h"

#include <unistd.h>

#if defined(SUNOS) && !defined(_LP64) && !defined(_I32LPx)
/* Solaris has, in certain situation, pid_t defined as long, while in other
 *  cases it has it defined as int... this handles all cases nicely. */
# define PRINTF_PID_T "%ld"
#else
# define PRINTF_PID_T "%d"
#endif

void DedicatedFork()
{
	/* Fork the program */
	pid_t pid = fork();
	switch (pid) {
		case -1:
			perror("Unable to fork");
			exit(1);

		case 0: { // We're the child
			FILE *f;

			/* Open the log-file to log all stuff too */
			f = fopen(_log_file, "a");
			if (f == NULL) {
				perror("Unable to open logfile");
				exit(1);
			}
			/* Redirect stdout and stderr to log-file */
			if (dup2(fileno(f), fileno(stdout)) == -1) {
				perror("Rerouting stdout");
				exit(1);
			}
			if (dup2(fileno(f), fileno(stderr)) == -1) {
				perror("Rerouting stderr");
				exit(1);
			}
			break;
		}

		default:
			/* We're the parent */
			printf("Loading dedicated server...\n");
			printf("  - Forked to background with pid " PRINTF_PID_T "\n", pid);
			exit(0);
	}
}
#endif

#else

/** Empty helper function call for NOT(UNIX and not MORPHOS) systems */
void DedicatedFork() {}

#endif /* ENABLE_NETWORK */