From 29bb4c6911b21c026c3863799dcbeaa29981bf7e Mon Sep 17 00:00:00 2001 From: "Jasper St. Pierre" Date: Fri, 21 Nov 2014 21:37:12 -0800 Subject: modetest: Use threads for cursors instead of SIGALRM This fixes an issue when trying to use -v and -C together. When trying to read the page flip event, we are interrupted by the SIGALRM that comes in, and so we think we timed out when we simply got EINTR. While we could just loop checking for EINTR, SIGALRM is just bad idea to begin with, so just rewrite it to use a thread. Signed-off-by: Rob Clark --- tests/modetest/cursor.c | 57 +++++++++++++++++++++++++------------------------ 1 file changed, 29 insertions(+), 28 deletions(-) (limited to 'tests/modetest/cursor.c') diff --git a/tests/modetest/cursor.c b/tests/modetest/cursor.c index 60f240ac..62a50efb 100644 --- a/tests/modetest/cursor.c +++ b/tests/modetest/cursor.c @@ -34,6 +34,8 @@ #include #include #include +#include +#include #include "xf86drm.h" #include "xf86drmMode.h" @@ -59,6 +61,9 @@ struct cursor { static struct cursor cursors[MAX_CURSORS]; static int ncursors; +static pthread_t cursor_thread; +static int cursor_running; + /* * Timer driven program loops through these steps to move/enable/disable * the cursor @@ -137,33 +142,29 @@ static struct cursor_step steps[] = { { set_cursor, 10, 0, 0 }, /* disable */ }; -/* - * Cursor API: - */ - -static void run_step(int sig) +static void *cursor_thread_func(void *data) { - struct cursor_step *step = &steps[indx % ARRAY_SIZE(steps)]; - struct itimerval itimer = { - .it_value.tv_usec = 1000 * step->msec, - }; - int i; - - for (i = 0; i < ncursors; i++) { - struct cursor *cursor = &cursors[i]; - step->run(cursor, step); - } - - /* iterate to next count/step: */ - if (count < step->repeat) { - count++; - } else { - count = 0; - indx++; + while (cursor_running) { + struct cursor_step *step = &steps[indx % ARRAY_SIZE(steps)]; + int i; + + for (i = 0; i < ncursors; i++) { + struct cursor *cursor = &cursors[i]; + step->run(cursor, step); + } + + /* iterate to next count/step: */ + if (count < step->repeat) { + count++; + } else { + count = 0; + indx++; + } + + usleep(1000 * step->msec); } - /* and lastly, setup timer for next step */ - setitimer(ITIMER_REAL, &itimer, NULL); + return NULL; } int cursor_init(int fd, uint32_t bo_handle, uint32_t crtc_id, @@ -194,16 +195,16 @@ int cursor_init(int fd, uint32_t bo_handle, uint32_t crtc_id, int cursor_start(void) { - /* setup signal handler to update cursor: */ - signal(SIGALRM, run_step); + cursor_running = 1; + pthread_create(&cursor_thread, NULL, cursor_thread_func, NULL); printf("starting cursor\n"); - run_step(SIGALRM); return 0; } int cursor_stop(void) { - signal(SIGALRM, NULL); + cursor_running = 0; + pthread_join(cursor_thread, NULL); printf("cursor stopped\n"); return 0; } -- cgit v1.2.3