move the accept logic into connect flow.
In order to successfully establish a blocking connection between
the client and server on the same thread.
nonblock is not affected, and the block connect is now the same
as the nonblock flow, other apis are not affected.
Signed-off-by: zhanghongyu <zhanghongyu@xiaomi.com>
if client is a noblocking socket, user can do close when server has not yet
invoke accept interface, so we need remove this socket from server.lc_waiters.
avoid server socket access the freed memory.
==936564==ERROR: AddressSanitizer: heap-use-after-free on address 0xf23071c8 at pc 0x58eaac3b bp 0xf0b9e218 sp 0xf0b9e208
READ of size 4 at 0xf23071c8 thread T0
#0 0x58eaac3a in dq_remfirst queue/dq_remfirst.c:45
#1 0x58fd1efe in local_accept local/local_accept.c:141
#2 0x58f66df6 in psock_accept socket/accept.c:149
#3 0x58f672a4 in accept4 socket/accept.c:280
#4 0x5be9ee0c in accept net/lib_accept.c:50
#5 0x592d6a5d in uv__accept libuv/src/unix/core.c:502
#6 0x5930d83b in uv__server_io libuv/src/unix/stream.c:550
#7 0x592efbde in uv__io_poll libuv/src/unix/posix-poll.c:335
#8 0x592d649a in uv_run libuv/src/unix/core.c:387
#9 0x5a7180f7 in service_schedule_loop service/common/service_loop.c:146
#10 0x591f300b in pthread_startup pthread/pthread_create.c:59
#11 0x5be8134f in pthread_start pthread/pthread_create.c:139
#12 0x58ee2762 in pre_start sim/sim_initialstate.c:53
Signed-off-by: zhanghongyu <zhanghongyu@xiaomi.com>
Add the proccessing logic of udp socketpair, and modify the
logic of sending and receiving for udp socketpair.
Verification:
- Use the socketpair interface to create a pair of local udp sockets,
and perform read and write operations.
Signed-off-by: liqinhui <liqinhui@xiaomi.com>
sched/semaphore: Add nxsem_post() which is identical to sem_post() except that it never modifies the errno variable. Changed all references to sem_post in the OS to nxsem_post().
sched/semaphore: Add nxsem_destroy() which is identical to sem_destroy() except that it never modifies the errno variable. Changed all references to sem_destroy() in the OS to nxsem_destroy().
libc/semaphore and sched/semaphore: Add nxsem_getprotocol() and nxsem_setprotocola which are identical to sem_getprotocol() and set_setprotocol() except that they never modifies the errno variable. Changed all references to sem_setprotocol in the OS to nxsem_setprotocol(). sem_getprotocol() was not used in the OS
