From 358e703c5c1a56fecf723d1413eda962938dcd4f Mon Sep 17 00:00:00 2001
From: deuce <>
Date: Tue, 11 Feb 2003 09:33:49 +0000
Subject: [PATCH] Basic semaphore emulation and defines for GNU/Hurd
---
src/xpdev/genwrap.c | 2 +-
src/xpdev/genwrap.h | 2 ++
src/xpdev/sem.c | 45 ++++++++++++++++++++++++++++++++++++++++++
src/xpdev/sem.h | 10 ++++++++++
src/xpdev/threadwrap.h | 4 ++++
5 files changed, 62 insertions(+), 1 deletion(-)
create mode 100644 src/xpdev/sem.c
create mode 100644 src/xpdev/sem.h
diff --git a/src/xpdev/genwrap.c b/src/xpdev/genwrap.c
index 99e14075fd..03b3fb3cb0 100644
--- a/src/xpdev/genwrap.c
+++ b/src/xpdev/genwrap.c
@@ -123,7 +123,7 @@ void DLLCALL unix_beep(int freq, int dur)
{
static int console_fd=-1;
-#if !defined(__OpenBSD__)
+#if !defined(__OpenBSD__) && !defined(__GNU__)
if(console_fd == -1)
console_fd = open("/dev/console", O_NOCTTY);
diff --git a/src/xpdev/genwrap.h b/src/xpdev/genwrap.h
index e4111b21e9..47c850ad45 100644
--- a/src/xpdev/genwrap.h
+++ b/src/xpdev/genwrap.h
@@ -106,6 +106,8 @@ extern "C" {
#define PLATFORM_DESC "Solaris"
#elif defined(__sun__)
#define PLATFORM_DESC "SunOS"
+#elif defined(__gnu__)
+ #define PLATFORM_DESC "GNU/Hurd"
#elif defined(__unix__)
#define PLATFORM_DESC "Unix"
#else
diff --git a/src/xpdev/sem.c b/src/xpdev/sem.c
new file mode 100644
index 0000000000..825653e603
--- /dev/null
+++ b/src/xpdev/sem.c
@@ -0,0 +1,45 @@
+#include <errno.h>
+#include <stdlib.h>
+#include <unistd.h>
+#include "genwrap.h"
+#include "sem.h"
+
+int sem_init(sem_t *sem, int pshared, unsigned int value) {
+ sem=malloc(sizeof(sem_t));
+ if(sem==NULL) {
+ errno=ENOSPC;
+ return(-1);
+ }
+ if(pipe((int *)sem)) {
+ errno=EPERM;
+ return(-1);
+ }
+ return(0);
+}
+
+int sem_destroy(sem_t *sem) {
+ close(sem->read);
+ close(sem->write);
+ sem=NULL;
+ return(0);
+}
+
+int sem_post(sem_t *sem) {
+ if(sem==NULL) {
+ errno=EINVAL;
+ return(-1);
+ }
+ write(sem->write,"-",1)==1;
+ return(0);
+}
+
+int sem_wait(sem_t *sem) {
+ char buf;
+ if(sem==NULL) {
+ errno=EINVAL;
+ return(-1);
+ }
+ while(read(sem->read,&buf,1)<1)
+ SLEEP(1);
+ return(0);
+}
diff --git a/src/xpdev/sem.h b/src/xpdev/sem.h
new file mode 100644
index 0000000000..9dbdd9eb90
--- /dev/null
+++ b/src/xpdev/sem.h
@@ -0,0 +1,10 @@
+typedef struct {
+ int read;
+ int write;
+} sem_t;
+
+int sem_init(sem_t *sem, int pshared, unsigned int value);
+int sem_destroy(sem_t *sem);
+int sem_post(sem_t *sem);
+int sem_wait(sem_t *sem);
+
diff --git a/src/xpdev/threadwrap.h b/src/xpdev/threadwrap.h
index accb941133..a72f5b0cbc 100644
--- a/src/xpdev/threadwrap.h
+++ b/src/xpdev/threadwrap.h
@@ -48,7 +48,11 @@ extern "C" {
#if defined(__unix__)
#include <pthread.h> /* POSIX threads and mutexes */
+#if defined(_NEED_SEM)
+ #include "sem.h"
+#else
#include <semaphore.h> /* POSIX semaphores */
+#endif
ulong _beginthread(void( *start_address )( void * )
,unsigned stack_size, void *arglist);
--
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