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libucontext_posix: add some tracing

master
Ariadne Conill 2020-12-08 18:28:35 -07:00
parent 27d8a515e1
commit ed1e5752fc
1 changed files with 13 additions and 0 deletions
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13
libucontext_posix.c
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@ -11,15 +11,24 @@
*/
#include <stddef.h>
#include <stdio.h>
#include <libucontext/libucontext.h>
#ifdef FREESTANDING
# error libucontext_posix cannot be built in FREESTANDING mode.
#endif
#ifdef DEBUG
# define TRACE(...) fprintf(stderr, "TRACE: " __VA_ARGS__)
#else
# define TRACE(...)
#endif
int
getcontext(libucontext_ucontext_t *ucp)
{
TRACE("getcontext(%p)\n", ucp);
if (sigprocmask(SIG_SETMASK, NULL, &ucp->uc_sigmask))
return -1;
@ -29,6 +38,8 @@ getcontext(libucontext_ucontext_t *ucp)
int
setcontext(const libucontext_ucontext_t *ucp)
{
TRACE("setcontext(%p)\n", ucp);
if (sigprocmask(SIG_SETMASK, &ucp->uc_sigmask, NULL))
return -1;
@ -38,6 +49,8 @@ setcontext(const libucontext_ucontext_t *ucp)
int
swapcontext(libucontext_ucontext_t *oucp, const libucontext_ucontext_t *ucp)
{
TRACE("swapcontext(%p, %p)\n", oucp, ucp);
if (sigprocmask(SIG_SETMASK, &ucp->uc_sigmask, &oucp->uc_sigmask))
return -1;