1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000
1.2 +++ b/nsprpub/pr/src/io/prio.c Wed Dec 31 06:09:35 2014 +0100
1.3 @@ -0,0 +1,180 @@
1.4 +/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
1.5 +/* This Source Code Form is subject to the terms of the Mozilla Public
1.6 + * License, v. 2.0. If a copy of the MPL was not distributed with this
1.7 + * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
1.8 +
1.9 +#include "primpl.h"
1.10 +
1.11 +#include <string.h> /* for memset() */
1.12 +
1.13 +
1.14 +/************************************************************************/
1.15 +
1.16 +PRLock *_pr_flock_lock;
1.17 +PRCondVar *_pr_flock_cv;
1.18 +
1.19 +#ifdef WINCE
1.20 +/*
1.21 + * There are no stdin, stdout, stderr in Windows CE. INVALID_HANDLE_VALUE
1.22 + * should cause all I/O functions on the handle to fail.
1.23 + */
1.24 +#define STD_INPUT_HANDLE ((DWORD)-10)
1.25 +#define STD_OUTPUT_HANDLE ((DWORD)-11)
1.26 +#define STD_ERROR_HANDLE ((DWORD)-12)
1.27 +
1.28 +static HANDLE GetStdHandle(DWORD nStdHandle)
1.29 +{
1.30 + SetLastError(ERROR_CALL_NOT_IMPLEMENTED);
1.31 + return INVALID_HANDLE_VALUE;
1.32 +}
1.33 +#endif
1.34 +
1.35 +void _PR_InitIO(void)
1.36 +{
1.37 + const PRIOMethods *methods = PR_GetFileMethods();
1.38 +
1.39 + _PR_InitFdCache();
1.40 +
1.41 + _pr_flock_lock = PR_NewLock();
1.42 + _pr_flock_cv = PR_NewCondVar(_pr_flock_lock);
1.43 +
1.44 +#ifdef WIN32
1.45 + _pr_stdin = PR_AllocFileDesc((PROsfd)GetStdHandle(STD_INPUT_HANDLE),
1.46 + methods);
1.47 + _pr_stdout = PR_AllocFileDesc((PROsfd)GetStdHandle(STD_OUTPUT_HANDLE),
1.48 + methods);
1.49 + _pr_stderr = PR_AllocFileDesc((PROsfd)GetStdHandle(STD_ERROR_HANDLE),
1.50 + methods);
1.51 +#ifdef WINNT
1.52 + _pr_stdin->secret->md.sync_file_io = PR_TRUE;
1.53 + _pr_stdout->secret->md.sync_file_io = PR_TRUE;
1.54 + _pr_stderr->secret->md.sync_file_io = PR_TRUE;
1.55 +#endif
1.56 +#else
1.57 + _pr_stdin = PR_AllocFileDesc(0, methods);
1.58 + _pr_stdout = PR_AllocFileDesc(1, methods);
1.59 + _pr_stderr = PR_AllocFileDesc(2, methods);
1.60 +#endif
1.61 + _PR_MD_INIT_FD_INHERITABLE(_pr_stdin, PR_TRUE);
1.62 + _PR_MD_INIT_FD_INHERITABLE(_pr_stdout, PR_TRUE);
1.63 + _PR_MD_INIT_FD_INHERITABLE(_pr_stderr, PR_TRUE);
1.64 +
1.65 + _PR_MD_INIT_IO();
1.66 +}
1.67 +
1.68 +void _PR_CleanupIO(void)
1.69 +{
1.70 + PR_FreeFileDesc(_pr_stdin);
1.71 + _pr_stdin = NULL;
1.72 + PR_FreeFileDesc(_pr_stdout);
1.73 + _pr_stdout = NULL;
1.74 + PR_FreeFileDesc(_pr_stderr);
1.75 + _pr_stderr = NULL;
1.76 +
1.77 + if (_pr_flock_cv) {
1.78 + PR_DestroyCondVar(_pr_flock_cv);
1.79 + _pr_flock_cv = NULL;
1.80 + }
1.81 + if (_pr_flock_lock) {
1.82 + PR_DestroyLock(_pr_flock_lock);
1.83 + _pr_flock_lock = NULL;
1.84 + }
1.85 +
1.86 + _PR_CleanupFdCache();
1.87 +}
1.88 +
1.89 +PR_IMPLEMENT(PRFileDesc*) PR_GetSpecialFD(PRSpecialFD osfd)
1.90 +{
1.91 + PRFileDesc *result = NULL;
1.92 + PR_ASSERT((int) osfd >= PR_StandardInput && osfd <= PR_StandardError);
1.93 +
1.94 + if (!_pr_initialized) _PR_ImplicitInitialization();
1.95 +
1.96 + switch (osfd)
1.97 + {
1.98 + case PR_StandardInput: result = _pr_stdin; break;
1.99 + case PR_StandardOutput: result = _pr_stdout; break;
1.100 + case PR_StandardError: result = _pr_stderr; break;
1.101 + default:
1.102 + (void)PR_SetError(PR_INVALID_ARGUMENT_ERROR, 0);
1.103 + }
1.104 + return result;
1.105 +}
1.106 +
1.107 +PR_IMPLEMENT(PRFileDesc*) PR_AllocFileDesc(
1.108 + PROsfd osfd, const PRIOMethods *methods)
1.109 +{
1.110 + PRFileDesc *fd;
1.111 +
1.112 +#ifdef XP_UNIX
1.113 + /*
1.114 + * Assert that the file descriptor is small enough to fit in the
1.115 + * fd_set passed to select
1.116 + */
1.117 + PR_ASSERT(osfd < FD_SETSIZE);
1.118 +#endif
1.119 + fd = _PR_Getfd();
1.120 + if (fd) {
1.121 + /* Initialize the members of PRFileDesc and PRFilePrivate */
1.122 + fd->methods = methods;
1.123 + fd->secret->state = _PR_FILEDESC_OPEN;
1.124 + fd->secret->md.osfd = osfd;
1.125 + _PR_MD_INIT_FILEDESC(fd);
1.126 + } else {
1.127 + PR_SetError(PR_OUT_OF_MEMORY_ERROR, 0);
1.128 + }
1.129 +
1.130 + return fd;
1.131 +}
1.132 +
1.133 +PR_IMPLEMENT(void) PR_FreeFileDesc(PRFileDesc *fd)
1.134 +{
1.135 + PR_ASSERT(fd);
1.136 + _PR_Putfd(fd);
1.137 +}
1.138 +
1.139 +/*
1.140 +** Wait for some i/o to finish on one or more more poll descriptors.
1.141 +*/
1.142 +PR_IMPLEMENT(PRInt32) PR_Poll(PRPollDesc *pds, PRIntn npds, PRIntervalTime timeout)
1.143 +{
1.144 + return(_PR_MD_PR_POLL(pds, npds, timeout));
1.145 +}
1.146 +
1.147 +/*
1.148 +** Set the inheritance attribute of a file descriptor.
1.149 +*/
1.150 +PR_IMPLEMENT(PRStatus) PR_SetFDInheritable(
1.151 + PRFileDesc *fd,
1.152 + PRBool inheritable)
1.153 +{
1.154 +#if defined(XP_UNIX) || defined(WIN32) || defined(XP_OS2) || defined(XP_BEOS)
1.155 + /*
1.156 + * Only a non-layered, NSPR file descriptor can be inherited
1.157 + * by a child process.
1.158 + */
1.159 + if (fd->identity != PR_NSPR_IO_LAYER) {
1.160 + PR_SetError(PR_INVALID_ARGUMENT_ERROR, 0);
1.161 + return PR_FAILURE;
1.162 + }
1.163 + if (fd->secret->inheritable != inheritable) {
1.164 + if (_PR_MD_SET_FD_INHERITABLE(fd, inheritable) == PR_FAILURE) {
1.165 + return PR_FAILURE;
1.166 + }
1.167 + fd->secret->inheritable = inheritable;
1.168 + }
1.169 + return PR_SUCCESS;
1.170 +#else
1.171 + PR_SetError(PR_NOT_IMPLEMENTED_ERROR, 0);
1.172 + return PR_FAILURE;
1.173 +#endif
1.174 +}
1.175 +
1.176 +/*
1.177 +** This function only has a useful implementation in the debug build of
1.178 +** the pthreads version.
1.179 +*/
1.180 +PR_IMPLEMENT(void) PT_FPrintStats(PRFileDesc *debug_out, const char *msg)
1.181 +{
1.182 + /* do nothing */
1.183 +} /* PT_FPrintStats */
