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add new wrapper around the pipe() syscall

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This commit is contained in:
Ray Strode 2007-05-14 15:00:50 -04:00
parent 1c9d5b99f2
commit 9ec699290d
2 changed files with 42 additions and 0 deletions
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35
src/ply-utils.c Normal file
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@ -0,0 +1,35 @@
#include <config.h>
#include "ply-utils.h"
bool
ply_open_unidirectional_pipe (int *sender_fd,
int *receiver_fd)
{
init pipe_fds[2];
assert (sender_fd != NULL);
assert (receiver_fd != NULL);
if (pipe (pipe_fds) < 0)
return false;
if (fcntl (pipe_fds[0], F_SETFD, O_NONBLOCK | FD_CLOEXEC) < 0)
{
close (pipe_fds[0]);
close (pipe_fds[1]);
return false;
}
if (fcntl (pipe_fds[1], F_SETFD, O_NONBLOCK | FD_CLOEXEC) < 0)
{
close (pipe_fds[0]);
close (pipe_fds[1]);
return false;
}
*sender_fd = pipe_fds[1];
*receiver_fd = pipe_fds[0];
return true;
}

7
src/ply-utils.h
View file

@ -22,6 +22,8 @@
#ifndef PLY_UTILS_H #ifndef PLY_UTILS_H
#define PLY_UTILS_H #define PLY_UTILS_H
#include <stdint.h>
#ifndef MIN #ifndef MIN
#define MIN(a,b) ((a) <= (b)? (a) : (b)) #define MIN(a,b) ((a) <= (b)? (a) : (b))
#endif #endif
@ -34,5 +36,10 @@
#define CLAMP(a,b,c) (MIN (MAX ((a), (b)), (c))) #define CLAMP(a,b,c) (MIN (MAX ((a), (b)), (c)))
#endif #endif
#ifndef PLY_HIDE_FUNCTION_DECLARATIONS
bool ply_open_unidirectional_pipe (int *sender_fd,
int *receiver_fd);
#endif
#endif /* PLY_UTILS_H */ #endif /* PLY_UTILS_H */
/* vim: set ts=4 sw=4 expandtab autoindent cindent cino={.5s,(0: */ /* vim: set ts=4 sw=4 expandtab autoindent cindent cino={.5s,(0: */