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Replaced SIGUSR1 with socketpair for synchronization between parent and child processes on RECVFROM type addresses

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This commit is contained in:
Gerhard Rieger 2023-06-23 22:48:26 +02:00
parent a0e17a813a
commit 02483ff39e
12 changed files with 269 additions and 257 deletions

6
xio.h
View file

@ -164,6 +164,7 @@ typedef struct single {
size_t actbytes; /* so many bytes still to be read (when readbytes!=0)*/
xiolock_t lock; /* parameters of lockfile */
bool havelock; /* we are happy owner of the above lock */
int triggerfd; /* close this FD in child process to signal parent */
bool cool_write; /* downlevel EPIPE, ECONNRESET to notice */
/* until here, keep consistent with bipipe.dual ! */
int argc; /* number of fields in argv */
@ -199,7 +200,6 @@ typedef struct single {
struct termios savetty; /* save orig tty settings for later restore */
#endif /* WITH_TERMIOS */
int (*sigchild)(struct single *); /* callback after sigchild */
pid_t ppid; /* parent pid, only if we send it signals */
int escape; /* escape character; -1 for no escape */
bool actescape; /* escape character found in input data */
union {
@ -312,7 +312,9 @@ typedef union bipipe {
size_t actbytes; /* so many bytes still to be read */
xiolock_t lock; /* parameters of lockfile */
bool havelock; /* we are happy owner of the above lock */
xiosingle_t *stream[2]; /* input stream, output stream */
int triggerfd; /* close this FD in child process to notify parent */
bool cool_write; /* downlevel EPIPE, ECONNRESET to notice */
struct single *stream[2]; /* input stream, output stream */
} dual;
} xiofile_t;