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SITL: prevent a fd leak in GPS code

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This commit is contained in:
Andrew Tridgell 2012-09-17 14:44:27 +10:00
parent 4d4a95501f
commit 78a95290a3
1 changed files with 7 additions and 3 deletions
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10
libraries/Desktop/support/sitl_gps.cpp
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@ -37,7 +37,7 @@ static uint8_t gps_delay;
// state of GPS emulation
static struct {
/* pipe emulating UBLOX GPS serial stream */
int gps_fd;
int gps_fd, client_fd;
uint32_t last_update; // milliseconds
} gps_state;
@ -55,12 +55,16 @@ ssize_t sitl_gps_read(int fd, void *buf, size_t count)
int sitl_gps_pipe(void)
{
int fd[2];
if (gps_state.client_fd != 0) {
return gps_state.client_fd;
}
pipe(fd);
gps_state.gps_fd = fd[1];
gps_state.gps_fd = fd[1];
gps_state.client_fd = fd[0];
gps_state.last_update = millis();
set_nonblocking(gps_state.gps_fd);
set_nonblocking(fd[0]);
return fd[0];
return gps_state.client_fd;
}