| … | |
… | |
| 357 | || fcntl (fd, F_SETFD, FD_CLOEXEC); |
357 | || fcntl (fd, F_SETFD, FD_CLOEXEC); |
| 358 | } |
358 | } |
| 359 | |
359 | |
| 360 | #endif |
360 | #endif |
| 361 | |
361 | |
|
|
362 | #if HAVE_EVENTFD |
|
|
363 | # include <sys/eventfd.h> |
|
|
364 | #else |
| 362 | #if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7)) |
365 | # if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7)) |
| 363 | # define SCHMORP_H_HAVE_EVENTFD 1 |
366 | # define SCHMORP_H_HAVE_EVENTFD 1 |
| 364 | /* our minimum requirement is glibc 2.7 which has the stub, but not the header */ |
367 | /* our minimum requirement is glibc 2.7 which has the stub, but not the header */ |
| 365 | # include <stdint.h> |
368 | # include <stdint.h> |
| 366 | # ifdef __cplusplus |
369 | # ifdef __cplusplus |
| 367 | extern "C" { |
370 | extern "C" { |
| 368 | # endif |
371 | # endif |
| 369 | int eventfd (unsigned int initval, int flags); |
372 | int eventfd (unsigned int initval, int flags); |
| 370 | # ifdef __cplusplus |
373 | # ifdef __cplusplus |
| 371 | } |
374 | } |
| 372 | # endif |
375 | # endif |
| 373 | #else |
376 | # else |
| 374 | # define eventfd(initval,flags) -1 |
377 | # define eventfd(initval,flags) -1 |
|
|
378 | # endif |
| 375 | #endif |
379 | #endif |
| 376 | |
380 | |
| 377 | typedef struct { |
381 | typedef struct { |
| 378 | int fd[2]; /* read, write fd, might be equal */ |
382 | int fd[2]; /* read, write fd, might be equal */ |
| 379 | int len; /* write length (1 pipe/socket, 8 eventfd) */ |
383 | int len; /* write length (1 pipe/socket, 8 eventfd) */ |
| … | |
… | |
| 436 | * incompetent windows programmers - is this redundant? |
440 | * incompetent windows programmers - is this redundant? |
| 437 | */ |
441 | */ |
| 438 | DWORD dummy; |
442 | DWORD dummy; |
| 439 | WriteFile (S_TO_HANDLE (epp->fd [1]), (LPCVOID)&dummy, 1, &dummy, 0); |
443 | WriteFile (S_TO_HANDLE (epp->fd [1]), (LPCVOID)&dummy, 1, &dummy, 0); |
| 440 | #else |
444 | #else |
| 441 | # if SCHMORP_H_HAVE_EVENTFD |
|
|
| 442 | static uint64_t counter = 1; |
445 | static uint64_t counter = 1; |
| 443 | # else |
|
|
| 444 | static char counter [8]; |
|
|
| 445 | # endif |
|
|
| 446 | /* some modules accept fd's from outside, support eventfd here */ |
446 | /* some modules accept fd's from outside, support eventfd here */ |
| 447 | if (write (epp->fd [1], &counter, epp->len) < 0 |
447 | if (write (epp->fd [1], &counter, epp->len) < 0 |
| 448 | && errno == EINVAL |
448 | && errno == EINVAL |
| 449 | && epp->len != 8) |
449 | && epp->len != 8) |
| 450 | write (epp->fd [1], &counter, (epp->len = 8)); |
450 | write (epp->fd [1], &counter, (epp->len = 8)); |
