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xfree86: Provide xf86BlockSIGIO and xf86ReleaseSIGIO as wrappers for input mutex

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Threaded input doesn't use SIGIO anymore, but existing drivers using
xf86BlockSIGIO and xf86ReleaseSIGIO probably want to lock the input
mutex during those operations. Provide inline functions to do this
which are marked as 'deprecated' so that drivers will get warnings
until they are changed.

Signed-off-by: Keith Packard <keithp@keithp.com>
Reviewed-by: Peter Hutterer <peter.hutterer@who-t.net>
This commit is contained in:
Keith Packard
2016-05-29 19:11:50 -07:00
parent 2bed654be7
commit 28b2c880a9
2 changed files with 9 additions and 5 deletions
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4
hw/xfree86/common/xf86.h
View File

@@ -93,6 +93,10 @@ extern _X_EXPORT Bool VTSwitchEnabled; /* kbd driver */
#define PIX24TOBPP(p) (((p) == Pix24Use24) ? 24 : \
(((p) == Pix24Use32) ? 32 : 0))
/* Compatibility functions for pre-input-thread drivers */
static inline _X_DEPRECATED int xf86BlockSIGIO(void) { input_lock(); return 0; }
static inline _X_DEPRECATED void xf86UnblockSIGIO(int wasset) { input_unlock(); }
/* Function Prototypes */
#ifndef _NO_XF86_PROTOTYPES

10
hw/xfree86/os-support/shared/sigio.c
View File

@@ -131,7 +131,7 @@ xf86IsPipe(int fd)
}
static void
xf86BlockSIGIO(void)
block_sigio(void)
{
sigset_t set;
@@ -141,7 +141,7 @@ xf86BlockSIGIO(void)
}
static void
xf86ReleaseSIGIO(void)
release_sigio(void)
{
sigset_t set;
@@ -165,7 +165,7 @@ xf86InstallSIGIOHandler(int fd, void (*f) (int, void *), void *closure)
if (!xf86SigIOFuncs[i].f) {
if (xf86IsPipe(fd))
return 0;
xf86BlockSIGIO();
block_sigio();
#ifdef O_ASYNC
if (fcntl(fd, F_SETFL, fcntl(fd, F_GETFL) | O_ASYNC) == -1) {
xf86Msg(X_WARNING, "fcntl(%d, O_ASYNC): %s\n",
@@ -193,7 +193,7 @@ xf86InstallSIGIOHandler(int fd, void (*f) (int, void *), void *closure)
}
#endif
if (!installed) {
xf86ReleaseSIGIO();
release_sigio();
return 0;
}
sigemptyset(&sa.sa_mask);
@@ -209,7 +209,7 @@ xf86InstallSIGIOHandler(int fd, void (*f) (int, void *), void *closure)
if (fd >= xf86SigIOMaxFd)
xf86SigIOMaxFd = fd + 1;
FD_SET(fd, &xf86SigIOMask);
xf86ReleaseSIGIO();
release_sigio();
return 1;
}
/* Allow overwriting of the closure and callback */