database/postgres
1
0
Fork 0
mirror of https://github.com/postgres/postgres.git synced 2025-12-19 17:02:53 +03:00
Code Activity

Add WL_SOCKET_CLOSED for socket shutdown events.

Browse Source 
Provide a way for WaitEventSet to report that the remote peer has shut
down its socket, independently of whether there is any buffered data
remaining to be read.  This works only on systems where the kernel
exposes that information, namely:

* WAIT_USE_POLL builds using POLLRDHUP, if available
* WAIT_USE_EPOLL builds using EPOLLRDHUP
* WAIT_USE_KQUEUE builds using EV_EOF

Reviewed-by: Zhihong Yu <zyu@yugabyte.com>
Reviewed-by: Maksim Milyutin <milyutinma@gmail.com>
Discussion: https://postgr.es/m/77def86b27e41f0efcba411460e929ae%40postgrespro.ru
This commit is contained in:
Thomas Munro
2022-02-14 16:29:28 +13:00
parent 5e01001ffb
commit 50e570a59e
2 changed files with 74 additions and 11 deletions
Download Patch File Download Diff File Expand all files Collapse all files

6
src/include/storage/latch.h
View File

@@ -134,10 +134,11 @@ typedef struct Latch
/* avoid having to deal with case on platforms not requiring it */
#define WL_SOCKET_CONNECTED WL_SOCKET_WRITEABLE
#endif
#define WL_SOCKET_CLOSED (1 << 7)
#define WL_SOCKET_MASK (WL_SOCKET_READABLE | \
WL_SOCKET_WRITEABLE | \
WL_SOCKET_CONNECTED)
WL_SOCKET_CONNECTED | \
WL_SOCKET_CLOSED)
typedef struct WaitEvent
{
@@ -180,5 +181,6 @@ extern int WaitLatchOrSocket(Latch *latch, int wakeEvents,
pgsocket sock, long timeout, uint32 wait_event_info);
extern void InitializeLatchWaitSet(void);
extern int GetNumRegisteredWaitEvents(WaitEventSet *set);
extern bool WaitEventSetCanReportClosed(void);
#endif /* LATCH_H */