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/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
#include "primpl.h"
#include <string.h> /* for memset() */
/************************************************************************/
PRLock* _pr_flock_lock;
PRCondVar* _pr_flock_cv;
#ifdef WINCE
/*
* There are no stdin, stdout, stderr in Windows CE. INVALID_HANDLE_VALUE
* should cause all I/O functions on the handle to fail.
*/
# define STD_INPUT_HANDLE ((DWORD) - 10)
# define STD_OUTPUT_HANDLE ((DWORD) - 11)
# define STD_ERROR_HANDLE ((DWORD) - 12)
static HANDLE GetStdHandle(DWORD nStdHandle) {
SetLastError(ERROR_CALL_NOT_IMPLEMENTED);
return INVALID_HANDLE_VALUE;
}
#endif
void _PR_InitIO(void) {
const PRIOMethods* methods = PR_GetFileMethods();
_PR_InitFdCache();
_pr_flock_lock = PR_NewLock();
_pr_flock_cv = PR_NewCondVar(_pr_flock_lock);
#ifdef WIN32
_pr_stdin = PR_AllocFileDesc((PROsfd)GetStdHandle(STD_INPUT_HANDLE), methods);
_pr_stdout =
PR_AllocFileDesc((PROsfd)GetStdHandle(STD_OUTPUT_HANDLE), methods);
_pr_stderr =
PR_AllocFileDesc((PROsfd)GetStdHandle(STD_ERROR_HANDLE), methods);
# ifdef WINNT
_pr_stdin->secret->md.sync_file_io = PR_TRUE;
_pr_stdout->secret->md.sync_file_io = PR_TRUE;
_pr_stderr->secret->md.sync_file_io = PR_TRUE;
# endif
#else
_pr_stdin = PR_AllocFileDesc(0, methods);
_pr_stdout = PR_AllocFileDesc(1, methods);
_pr_stderr = PR_AllocFileDesc(2, methods);
#endif
_PR_MD_INIT_FD_INHERITABLE(_pr_stdin, PR_TRUE);
_PR_MD_INIT_FD_INHERITABLE(_pr_stdout, PR_TRUE);
_PR_MD_INIT_FD_INHERITABLE(_pr_stderr, PR_TRUE);
_PR_MD_INIT_IO();
}
void _PR_CleanupIO(void) {
PR_FreeFileDesc(_pr_stdin);
_pr_stdin = NULL;
PR_FreeFileDesc(_pr_stdout);
_pr_stdout = NULL;
PR_FreeFileDesc(_pr_stderr);
_pr_stderr = NULL;
if (_pr_flock_cv) {
PR_DestroyCondVar(_pr_flock_cv);
_pr_flock_cv = NULL;
}
if (_pr_flock_lock) {
PR_DestroyLock(_pr_flock_lock);
_pr_flock_lock = NULL;
}
_PR_CleanupFdCache();
}
PR_IMPLEMENT(PRFileDesc*) PR_GetSpecialFD(PRSpecialFD osfd) {
PRFileDesc* result = NULL;
PR_ASSERT((int)osfd >= PR_StandardInput && osfd <= PR_StandardError);
if (!_pr_initialized) {
_PR_ImplicitInitialization();
}
switch (osfd) {
case PR_StandardInput:
result = _pr_stdin;
break;
case PR_StandardOutput:
result = _pr_stdout;
break;
case PR_StandardError:
result = _pr_stderr;
break;
default:
(void)PR_SetError(PR_INVALID_ARGUMENT_ERROR, 0);
}
return result;
}
PR_IMPLEMENT(PRFileDesc*)
PR_AllocFileDesc(PROsfd osfd, const PRIOMethods* methods) {
PRFileDesc* fd;
#ifdef XP_UNIX
/*
* Assert that the file descriptor is small enough to fit in the
* fd_set passed to select
*/
PR_ASSERT(osfd < FD_SETSIZE);
#endif
fd = _PR_Getfd();
if (fd) {
/* Initialize the members of PRFileDesc and PRFilePrivate */
fd->methods = methods;
fd->secret->state = _PR_FILEDESC_OPEN;
fd->secret->md.osfd = osfd;
#if defined(_WIN64)
fd->secret->alreadyConnected = PR_FALSE;
fd->secret->overlappedActive = PR_FALSE;
#endif
_PR_MD_INIT_FILEDESC(fd);
} else {
PR_SetError(PR_OUT_OF_MEMORY_ERROR, 0);
}
return fd;
}
PR_IMPLEMENT(void) PR_FreeFileDesc(PRFileDesc* fd) {
PR_ASSERT(fd);
_PR_Putfd(fd);
}
#if defined(_WIN64) && defined(WIN95)
PRFileDescList* _fd_waiting_for_overlapped_done = NULL;
PRLock* _fd_waiting_for_overlapped_done_lock = NULL;
void CheckOverlappedPendingSocketsAreDone() {
if (!_fd_waiting_for_overlapped_done_lock ||
!_fd_waiting_for_overlapped_done) {
return;
}
PR_Lock(_fd_waiting_for_overlapped_done_lock);
PRFileDescList* cur = _fd_waiting_for_overlapped_done;
PRFileDescList* previous = NULL;
while (cur) {
PR_ASSERT(cur->fd->secret->overlappedActive);
PRFileDesc* fd = cur->fd;
DWORD rvSent;
if (GetOverlappedResult((HANDLE)fd->secret->md.osfd, &fd->secret->ol,
&rvSent, FALSE) == TRUE) {
fd->secret->overlappedActive = PR_FALSE;
PR_LOG(_pr_io_lm, PR_LOG_MIN,
("CheckOverlappedPendingSocketsAreDone GetOverlappedResult "
"succeeded\n"));
} else {
DWORD err = WSAGetLastError();
PR_LOG(_pr_io_lm, PR_LOG_MIN,
("CheckOverlappedPendingSocketsAreDone GetOverlappedResult failed "
"%d\n",
err));
if (err != ERROR_IO_INCOMPLETE) {
fd->secret->overlappedActive = PR_FALSE;
}
}
if (!fd->secret->overlappedActive) {
_PR_MD_CLOSE_SOCKET(fd->secret->md.osfd);
fd->secret->state = _PR_FILEDESC_CLOSED;
# ifdef _PR_HAVE_PEEK_BUFFER
if (fd->secret->peekBuffer) {
PR_ASSERT(fd->secret->peekBufSize > 0);
PR_DELETE(fd->secret->peekBuffer);
fd->secret->peekBufSize = 0;
fd->secret->peekBytes = 0;
}
# endif
PR_FreeFileDesc(fd);
if (previous) {
previous->next = cur->next;
} else {
_fd_waiting_for_overlapped_done = cur->next;
}
PRFileDescList* del = cur;
cur = cur->next;
PR_Free(del);
} else {
previous = cur;
cur = cur->next;
}
}
PR_Unlock(_fd_waiting_for_overlapped_done_lock);
}
#endif
/*
** Wait for some i/o to finish on one or more more poll descriptors.
*/
PR_IMPLEMENT(PRInt32)
PR_Poll(PRPollDesc* pds, PRIntn npds, PRIntervalTime timeout) {
#if defined(_WIN64) && defined(WIN95)
// For each iteration check if TFO overlapped IOs are down.
CheckOverlappedPendingSocketsAreDone();
#endif
return (_PR_MD_PR_POLL(pds, npds, timeout));
}
/*
** Set the inheritance attribute of a file descriptor.
*/
PR_IMPLEMENT(PRStatus) PR_SetFDInheritable(PRFileDesc* fd, PRBool inheritable) {
#if defined(XP_UNIX) || defined(WIN32)
/*
* Only a non-layered, NSPR file descriptor can be inherited
* by a child process.
*/
if (fd->identity != PR_NSPR_IO_LAYER) {
PR_SetError(PR_INVALID_ARGUMENT_ERROR, 0);
return PR_FAILURE;
}
if (fd->secret->inheritable != inheritable) {
if (_PR_MD_SET_FD_INHERITABLE(fd, inheritable) == PR_FAILURE) {
return PR_FAILURE;
}
fd->secret->inheritable = inheritable;
}
return PR_SUCCESS;
#else
PR_SetError(PR_NOT_IMPLEMENTED_ERROR, 0);
return PR_FAILURE;
#endif
}
/*
** This function only has a useful implementation in the debug build of
** the pthreads version.
*/
PR_IMPLEMENT(void) PT_FPrintStats(PRFileDesc* debug_out, const char* msg) {
/* do nothing */
} /* PT_FPrintStats */