From 173981bc49c9e8fce9271cb47714952dbe2ec627 Mon Sep 17 00:00:00 2001 From: Pedro Alves Date: Tue, 12 Apr 2016 17:20:04 +0100 Subject: Use setjmp/longjmp for TRY/CATCH instead of sigsetjmp/siglongjmp Now that we don't ever throw GDB exceptions from signal handlers [1], we can switch to have TRY/CATCH implemented in terms of plain setjmp/longjmp instead of sigsetjmp/siglongjmp. In https://sourceware.org/ml/gdb-patches/2015-02/msg00114.html, Yichun Zhang mentions a 11%/14%+ speedup in his GDB python scripts with a patch that did something similar to only a specific set of TRY/CATCH calls. [1] - https://sourceware.org/ml/gdb-patches/2016-03/msg00351.html Tested on x86_64 Fedora 23, native and gdbserver. gdb/ChangeLog: 2016-04-12 Pedro Alves * common/common-exceptions.c (struct catcher) : Now a 'jmp_buf' instead of SIGJMP_BUF. (exceptions_state_mc_init): Change return type to 'jmp_buf'. (throw_exception): Use longjmp instead of SIGLONGJMP. * common/common-exceptions.h: Include instead of "gdb_setjmp.h". (exceptions_state_mc_init): Change return type to 'jmp_buf'. [GDB_XCPT == GDB_XCPT_SJMP] (TRY): Use setjmp instead of SIGSETJMP. * cp-support.c: Include "gdb_setjmp.h". --- gdb/cp-support.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'gdb/cp-support.c') diff --git a/gdb/cp-support.c b/gdb/cp-support.c index c7f5074..5662f86 100644 --- a/gdb/cp-support.c +++ b/gdb/cp-support.c @@ -34,7 +34,7 @@ #include "cp-abi.h" #include "namespace.h" #include - +#include "gdb_setjmp.h" #include "safe-ctype.h" #define d_left(dc) (dc)->u.s_binary.left -- cgit v1.1