diff options
Diffstat (limited to 'src')
| -rw-r--r-- | src/ChangeLog | 14 | ||||
| -rw-r--r-- | src/alloc.c | 6 | ||||
| -rw-r--r-- | src/image.c | 14 | ||||
| -rw-r--r-- | src/process.c | 4 |
4 files changed, 26 insertions, 12 deletions
diff --git a/src/ChangeLog b/src/ChangeLog index 17dec525156..a8d6a4026a0 100644 --- a/src/ChangeLog +++ b/src/ChangeLog @@ -1,3 +1,17 @@ +2012-09-04 Paul Eggert <eggert@cs.ucla.edu> + + Be more systematic about _setjmp vs setjmp. + * alloc.c (test_setjmp, mark_stack): + * image.c (PNG_LONGJMP) [PNG_LIBPNG_VER < 10500]: + (PNG_JMPBUF) [! (PNG_LIBPNG_VER < 10500)]: + (png_load, my_error_exit, jpeg_load): + * process.c (send_process_trap, send_process): + Uniformly prefer _setjmp and _longjmp to setjmp and longjmp. + The underscored versions are up to 30x faster on some hosts. + Formerly, the code used setjmp+longjmp sometimes and + _setjmp+_longjmp at other times, with no particular reason to + prefer setjmp+longjmp. + 2012-09-03 Paul Eggert <eggert@cs.ucla.edu> Fix minor problem found by static checking. diff --git a/src/alloc.c b/src/alloc.c index 188a514376d..edecd51f1ac 100644 --- a/src/alloc.c +++ b/src/alloc.c @@ -4764,7 +4764,7 @@ test_setjmp (void) x = strlen (buf); x = 2 * x - 1; - setjmp (jbuf); + _setjmp (jbuf); if (longjmps_done == 1) { /* Came here after the longjmp at the end of the function. @@ -4789,7 +4789,7 @@ test_setjmp (void) ++longjmps_done; x = 2; if (longjmps_done == 1) - longjmp (jbuf, 1); + _longjmp (jbuf, 1); } #endif /* not GC_SAVE_REGISTERS_ON_STACK && not GC_SETJMP_WORKS */ @@ -4931,7 +4931,7 @@ mark_stack (void) } #endif /* GC_SETJMP_WORKS */ - setjmp (j.j); + _setjmp (j.j); end = stack_grows_down_p ? (char *) &j + sizeof j : (char *) &j; #endif /* not GC_SAVE_REGISTERS_ON_STACK */ #endif /* not HAVE___BUILTIN_UNWIND_INIT */ diff --git a/src/image.c b/src/image.c index a067dae7737..3e021677e09 100644 --- a/src/image.c +++ b/src/image.c @@ -5517,13 +5517,13 @@ init_png_functions (Lisp_Object libraries) #if (PNG_LIBPNG_VER < 10500) -#define PNG_LONGJMP(ptr) (longjmp ((ptr)->jmpbuf, 1)) +#define PNG_LONGJMP(ptr) (_longjmp ((ptr)->jmpbuf, 1)) #define PNG_JMPBUF(ptr) ((ptr)->jmpbuf) #else /* In libpng version 1.5, the jmpbuf member is hidden. (Bug#7908) */ #define PNG_LONGJMP(ptr) (fn_png_longjmp ((ptr), 1)) #define PNG_JMPBUF(ptr) \ - (*fn_png_set_longjmp_fn ((ptr), longjmp, sizeof (jmp_buf))) + (*fn_png_set_longjmp_fn ((ptr), _longjmp, sizeof (jmp_buf))) #endif /* Error and warning handlers installed when the PNG library @@ -5696,7 +5696,7 @@ png_load (struct frame *f, struct image *img) /* Set error jump-back. We come back here when the PNG library detects an error. */ - if (setjmp (PNG_JMPBUF (png_ptr))) + if (_setjmp (PNG_JMPBUF (png_ptr))) { error: if (png_ptr) @@ -6114,7 +6114,7 @@ static _Noreturn void my_error_exit (j_common_ptr cinfo) { struct my_jpeg_error_mgr *mgr = (struct my_jpeg_error_mgr *) cinfo->err; - longjmp (mgr->setjmp_buffer, 1); + _longjmp (mgr->setjmp_buffer, 1); } @@ -6365,7 +6365,7 @@ jpeg_load (struct frame *f, struct image *img) cinfo.err = fn_jpeg_std_error (&mgr.pub); mgr.pub.error_exit = my_error_exit; - if ((rc = setjmp (mgr.setjmp_buffer)) != 0) + if ((rc = _setjmp (mgr.setjmp_buffer)) != 0) { if (rc == 1) { @@ -6411,12 +6411,12 @@ jpeg_load (struct frame *f, struct image *img) if (!check_image_size (f, width, height)) { image_error ("Invalid image size (see `max-image-size')", Qnil, Qnil); - longjmp (mgr.setjmp_buffer, 2); + _longjmp (mgr.setjmp_buffer, 2); } /* Create X image and pixmap. */ if (!x_create_x_image_and_pixmap (f, width, height, 0, &ximg, &img->pixmap)) - longjmp (mgr.setjmp_buffer, 2); + _longjmp (mgr.setjmp_buffer, 2); /* Allocate colors. When color quantization is used, cinfo.actual_number_of_colors has been set with the number of diff --git a/src/process.c b/src/process.c index 04b6abe50a7..2d144b410ed 100644 --- a/src/process.c +++ b/src/process.c @@ -5431,7 +5431,7 @@ send_process_trap (int ignore) { SIGNAL_THREAD_CHECK (SIGPIPE); sigunblock (sigmask (SIGPIPE)); - longjmp (send_process_frame, 1); + _longjmp (send_process_frame, 1); } /* In send_process, when a write fails temporarily, @@ -5634,7 +5634,7 @@ send_process (volatile Lisp_Object proc, const char *volatile buf, /* 2000-09-21: Emacs 20.7, sparc-sun-solaris-2.6, GCC 2.95.2, CFLAGS="-g -O": The value of the parameter `proc' is clobbered when returning with longjmp despite being declared volatile. */ - if (!setjmp (send_process_frame)) + if (!_setjmp (send_process_frame)) { p = XPROCESS (proc); /* Repair any setjmp clobbering. */ process_sent_to = proc; |