Fixes to enable DISPATCH_DEBUG on Linux

Small fixes to code guarded under DISPATCH_DEBUG to
fix Linux compilation issues.

Signed-off-by: Daniel A. Steffen <[email protected]>

Author: dgrove-oss

src/init.c

@@ -528,7 +528,7 @@ _dispatch_logv_init(void *context DISPATCH_UNUSED)
 			struct timeval tv;
 			gettimeofday(&tv, NULL);
 #if DISPATCH_DEBUG
-			dispatch_log_basetime = mach_absolute_time();
+			dispatch_log_basetime = _dispatch_absolute_time();
 #endif
 			dprintf(dispatch_logfile, "=== log file opened for %s[%u] at "
 					"%ld.%06u ===\n", getprogname() ?: "", getpid(),
@@ -560,7 +560,7 @@ _dispatch_logv_file(const char *msg, va_list ap)
 
 #if DISPATCH_DEBUG
 	offset += dsnprintf(&buf[offset], bufsiz - offset, "%llu\t",
-			mach_absolute_time() - dispatch_log_basetime);
+			_dispatch_absolute_time() - dispatch_log_basetime);
 #endif
 	r = vsnprintf(&buf[offset], bufsiz - offset, msg, ap);
 	if (r < 0) return;
@@ -657,7 +657,7 @@ _dispatch_debugv(dispatch_object_t dou, const char *msg, va_list ap)
 	int r;
 #if DISPATCH_DEBUG && !DISPATCH_USE_OS_DEBUG_LOG
 	offset += dsnprintf(&buf[offset], bufsiz - offset, "%llu\t\t%p\t",
-			mach_absolute_time() - dispatch_log_basetime,
+			_dispatch_absolute_time() - dispatch_log_basetime,
 			(void *)_dispatch_thread_self());
 #endif
 	if (dou._do) {

src/shims/linux_stubs.c

@@ -63,5 +63,9 @@ unsigned short dispatch_timer__program_semaphore;
 unsigned short dispatch_timer__wake_semaphore;
 unsigned short dispatch_timer__fire_semaphore;
 unsigned short dispatch_timer__configure_semaphore;
+unsigned short dispatch_queue__pop_semaphore;
+unsigned short dispatch_callout__entry_semaphore;
+unsigned short dispatch_callout__return_semaphore;
+unsigned short dispatch_queue__push_semaphore;
 void (*_dispatch_block_special_invoke)(void*);
 struct dispatch_queue_attr_s _dispatch_queue_attr_concurrent;

src/source.c

@@ -4704,8 +4704,12 @@ _evflagstr2(uint16_t *flagsp)
 	_evflag2(EV_RECEIPT);
 	_evflag2(EV_DISPATCH);
 	_evflag2(EV_UDATA_SPECIFIC);
+#ifdef EV_POLL
 	_evflag2(EV_POLL);
+#endif
+#ifdef EV_OOBAND
 	_evflag2(EV_OOBAND);
+#endif
 	_evflag2(EV_ERROR);
 	_evflag2(EV_EOF);
 	*flagsp = 0;
@@ -4814,7 +4818,12 @@ _dispatch_kevent_debug(const _dispatch_kevent_qos_s* kev, const char* str)
 			"ext[0] = 0x%llx, ext[1] = 0x%llx }: %s", kev, kev->ident,
 			_evfiltstr(kev->filter), _evflagstr(kev->flags, flagstr,
 			sizeof(flagstr)), kev->flags, kev->fflags, kev->data, kev->udata,
-			kev->ext[0], kev->ext[1], str);
+#if DISPATCH_USE_KEVENT_QOS
+			kev->ext[0], kev->ext[1],
+#else
+			0ull, 0ull,
+#endif
+			str);
 }
 
 static void
@@ -4919,9 +4928,11 @@ _dispatch_kevent_debugger(void *context DISPATCH_UNUSED)
 	int val, r, fd, sock_opt = 1;
 	socklen_t slen = sizeof(sa_u);
 
+#ifndef __linux__
 	if (issetugid()) {
 		return;
 	}
+#endif
 	valstr = getenv("LIBDISPATCH_DEBUGGER");
 	if (!valstr) {
 		return;