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authorDaniel Stenberg <daniel@haxx.se>2002-06-10 10:17:54 +0000
committerDaniel Stenberg <daniel@haxx.se>2002-06-10 10:17:54 +0000
commit604cce76cffcad3e890084f90b1199a0ce46e176 (patch)
tree7c325a731ed34b9b7219eecd9218d6e40a4fc9fe /uisimulator
parentb97f032464f654f9bd4c45a3b09a52e6a3693ca0 (diff)
downloadrockbox-604cce76cffcad3e890084f90b1199a0ce46e176.tar.gz
rockbox-604cce76cffcad3e890084f90b1199a0ce46e176.zip
add thread functionality, powered by pthreads
git-svn-id: svn://svn.rockbox.org/rockbox/trunk@928 a1c6a512-1295-4272-9138-f99709370657
Diffstat (limited to 'uisimulator')
-rw-r--r--uisimulator/x11/Makefile4
-rw-r--r--uisimulator/x11/thread.c69
2 files changed, 71 insertions, 2 deletions
diff --git a/uisimulator/x11/Makefile b/uisimulator/x11/Makefile
index 2b2dab1960..0c40a0336a 100644
--- a/uisimulator/x11/Makefile
+++ b/uisimulator/x11/Makefile
@@ -48,7 +48,7 @@ LDFLAGS = -lX11 -lm -lXt -lXmu -lnsl
INCLUDES = -I. -I$(DRIVERS) -I$(COMMON) -I$(FIRMWAREDIR) -I$(APPDIR) -I$(RECDIR)
-LIBS =
+LIBS = -lpthread
UNAME := $(shell uname)
ifeq ($(UNAME),Linux)
@@ -77,7 +77,7 @@ ifeq ($(DISPLAY),-DHAVE_LCD_BITMAP)
endif
SRCS = screenhack.c uibasic.c resources.c visual.c lcd-x11.c mpeg.c \
- button-x11.c io.c sleep.c $(APPS) $(FIRMSRCS)
+ button-x11.c io.c sleep.c thread.c $(APPS) $(FIRMSRCS)
ifdef MPEG_PLAY
SRCS += mpegplay.c oss_sound.c bit.c decoder.c fixed.c frame.c huffman.c layer12.c layer3.c stream.c synth.c timer.c version.c
diff --git a/uisimulator/x11/thread.c b/uisimulator/x11/thread.c
new file mode 100644
index 0000000000..769de5bef0
--- /dev/null
+++ b/uisimulator/x11/thread.c
@@ -0,0 +1,69 @@
+/***************************************************************************
+ * __________ __ ___.
+ * Open \______ \ ____ ____ | | _\_ |__ _______ ___
+ * Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ /
+ * Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < <
+ * Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \
+ * \/ \/ \/ \/ \/
+ * $Id$
+ *
+ * Copyright (C) 2002 Daniel Stenberg
+ *
+ * All files in this archive are subject to the GNU General Public License.
+ * See the file COPYING in the source tree root for full license agreement.
+ *
+ * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
+ * KIND, either express or implied.
+ *
+ ****************************************************************************/
+
+#include <stdio.h>
+#include <pthread.h>
+
+/*
+ * We emulate the target threads by using pthreads. We have a mutex that only
+ * allows one thread at a time to execute. It forces each thread to yield()
+ * for the other(s) to run.
+ */
+
+pthread_mutex_t mp;
+
+void init_threads(void)
+{
+ pthread_mutex_init(&mp, NULL);
+}
+/*
+ int pthread_create(pthread_t *new_thread_ID,
+ const pthread_attr_t *attr,
+ void * (*start_func)(void *), void *arg);
+*/
+
+void yield(void)
+{
+ pthread_mutex_unlock(&mp); /* return */
+ pthread_mutex_lock(&mp); /* get it again */
+}
+
+int create_thread(void* fp, void* sp, int stk_size)
+{
+ pthread_t tid;
+ int i;
+ int error;
+
+ /* we really don't care about these arguments */
+ (void)sp;
+ (void)stk_size;
+ error = pthread_create(&tid,
+ NULL, /* default attributes please */
+ fp, /* function to start */
+ NULL /* start argument */);
+ if(0 != error)
+ fprintf(stderr, "Couldn't run thread number %d, errno %d\n", i, error);
+ else
+ fprintf(stderr, "Thread %d is running\n", tid);
+
+ /* get mutex to only allow one thread running at a time */
+ pthread_mutex_lock(&mp);
+
+ return error;
+}