os2 patch by Jeff Rush

This commit is contained in:
Guido van Rossum 1997-11-22 21:53:48 +00:00
parent c0b93191e6
commit 8e9ebfd337
12 changed files with 459 additions and 28 deletions

View File

@ -44,7 +44,7 @@ PERFORMANCE OF THIS SOFTWARE.
#define DELIM '\n'
#endif
#if defined(MS_WINDOWS) || defined(__BORLANDC__) || defined(__WATCOMC__) || defined(__DJGPP__)
#if defined(MS_WINDOWS) || defined(__BORLANDC__) || defined(__WATCOMC__) || defined(__DJGPP__) || defined(__TOS_OS2__)
#define SEP '\\'
#define ALTSEP '/'
#define MAXPATHLEN 256

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@ -59,6 +59,18 @@ elif 'dos' in _names:
import dospath
path = dospath
del dospath
elif 'os2' in _names:
name = 'os2'
curdir = '.'; pardir = '..'; sep = '\\'; pathsep = ';'
defpath = '.;C:\\bin'
from os2 import *
try:
from os2 import _exit
except ImportError:
pass
import ntpath
path = ntpath
del ntpath
elif 'mac' in _names:
name = 'mac'
curdir = ':'; pardir = '::'; sep = ':'; pathsep = '\n'

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@ -35,7 +35,7 @@ else:
def test():
import sys
if sys.platform[:3] in ('win', 'mac'):
if sys.platform[:3] in ('win', 'mac', 'os2'):
if verbose:
print "Can't test select easily on", sys.platform
return

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@ -4,9 +4,8 @@ import signal
import os
import sys
if sys.platform[:3] == 'win':
raise ImportError, "Can't test signal on Windows"
if sys.platform[:3] in ('win', 'os2'):
raise ImportError, "Can't test signal on %s" % sys.platform[:3]
if verbose:
x = '-x'

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@ -46,10 +46,16 @@ standardized by the C Standard and the POSIX standard (a thinly\n\
disguised Unix interface). Refer to the library manual and\n\
corresponding Unix manual entries for more information on calls.";
#include "Python.h"
#if defined(PYOS_OS2)
#define INCL_DOS
#define INCL_DOSERRORS
#define INCL_DOSPROCESS
#define INCL_NOPMAPI
#include <os2.h>
#endif
#include <sys/types.h>
#include <sys/stat.h>
#ifdef HAVE_SYS_WAIT_H
@ -68,6 +74,24 @@ corresponding Unix manual entries for more information on calls.";
/* Various compilers have only certain posix functions */
/* XXX Gosh I wish these were all moved into config.h */
#if defined(PYCC_VACPP) && defined(PYOS_OS2)
#define HAVE_EXECV 1
#define HAVE_GETCWD 1
#define HAVE_SYSTEM 1
#define HAVE_WAIT 1
#define HAVE_KILL 1
#define HAVE_PIPE 1
#define HAVE_POPEN 1
// #define HAVE_FORK 1
// #define HAVE_GETEGID 1
// #define HAVE_GETEUID 1
// #define HAVE_GETGID 1
// #define HAVE_GETPPID 1
// #define HAVE_GETUID 1
// #define HAVE_OPENDIR 1
#include <process.h>
#else
#ifdef __WATCOMC__ /* Watcom compiler */
#define HAVE_GETCWD 1
#define HAVE_OPENDIR 1
@ -121,6 +145,7 @@ corresponding Unix manual entries for more information on calls.";
#endif /* _MSC_VER */
#endif /* __BORLANDC__ */
#endif /* ! __WATCOMC__ */
#endif /* ! __IBMC__ */
#ifndef _MSC_VER
@ -143,13 +168,22 @@ extern int pclose();
extern int lstat();
extern int symlink();
#else /* !HAVE_UNISTD_H */
#if defined(PYCC_VACPP)
extern int mkdir Py_PROTO((char *));
#else
#if defined(__WATCOMC__) || defined(_MSC_VER)
extern int mkdir Py_PROTO((const char *));
#else
extern int mkdir Py_PROTO((const char *, mode_t));
#endif
#endif
#if defined(__IBMC__) || defined(__IBMCPP__)
extern int chdir Py_PROTO((char *));
extern int rmdir Py_PROTO((char *));
#else
extern int chdir Py_PROTO((const char *));
extern int rmdir Py_PROTO((const char *));
#endif
extern int chmod Py_PROTO((const char *, mode_t));
extern int chown Py_PROTO((const char *, uid_t, gid_t));
extern char *getcwd Py_PROTO((char *, int));
@ -310,7 +344,7 @@ posix_2str(args, func)
Py_BEGIN_ALLOW_THREADS
res = (*func)(path1, path2);
Py_END_ALLOW_THREADS
if (res < 0)
if (res != 0)
return posix_error();
Py_INCREF(Py_None);
return Py_None;
@ -480,7 +514,7 @@ posix_listdir(self, args)
PyObject *self;
PyObject *args;
{
/* XXX Should redo this putting the three versions of opendir
/* XXX Should redo this putting the (now four) versions of opendir
in separate files instead of having them all here... */
#if defined(MS_WIN32) && !defined(HAVE_OPENDIR)
@ -600,6 +634,78 @@ posix_listdir(self, args)
return d;
#else
#if defined(PYOS_OS2)
#ifndef MAX_PATH
#define MAX_PATH CCHMAXPATH
#endif
char *name, *pt;
int len;
PyObject *d, *v;
char namebuf[MAX_PATH+5];
HDIR hdir = 1;
ULONG srchcnt = 1;
FILEFINDBUF3 ep;
APIRET rc;
if (!PyArg_Parse(args, "s#", &name, &len))
return NULL;
if (len >= MAX_PATH) {
PyErr_SetString(PyExc_ValueError, "path too long");
return NULL;
}
strcpy(namebuf, name);
for (pt = namebuf; *pt; pt++)
if (*pt == '/')
*pt = '\\';
if (namebuf[len-1] != '\\')
namebuf[len++] = '\\';
strcpy(namebuf + len, "*.*");
if ((d = PyList_New(0)) == NULL)
return NULL;
rc = DosFindFirst(namebuf, // Wildcard Pattern to Match
&hdir, // Handle to Use While Search Directory
FILE_READONLY | FILE_HIDDEN | FILE_SYSTEM | FILE_DIRECTORY,
&ep, sizeof(ep), // Structure to Receive Directory Entry
&srchcnt, // Max and Actual Count of Entries Per Iteration
FIL_STANDARD); // Format of Entry (EAs or Not)
if (rc != NO_ERROR) {
errno = ENOENT;
return posix_error();
}
if (srchcnt > 0) { // If Directory is NOT Totally Empty,
do {
if (ep.achName[0] == '.'
&& (ep.achName[1] == '\0' || ep.achName[1] == '.' && ep.achName[2] == '\0'))
continue; // Skip Over "." and ".." Names
strcpy(namebuf, ep.achName);
// Leave Case of Name Alone -- In Native Form
// (Removed Forced Lowercasing Code)
v = PyString_FromString(namebuf);
if (v == NULL) {
Py_DECREF(d);
d = NULL;
break;
}
if (PyList_Append(d, v) != 0) {
Py_DECREF(v);
Py_DECREF(d);
d = NULL;
break;
}
Py_DECREF(v);
} while (DosFindNext(hdir, &ep, sizeof(ep), &srchcnt) == NO_ERROR && srchcnt > 0);
}
return d;
#else
char *name;
@ -642,6 +748,7 @@ posix_listdir(self, args)
return d;
#endif /* !PYOS_OS2 */
#endif /* !_MSC_VER */
#endif /* !MS_WIN32 */
}
@ -661,7 +768,7 @@ posix_mkdir(self, args)
if (!PyArg_ParseTuple(args, "s|i", &path, &mode))
return NULL;
Py_BEGIN_ALLOW_THREADS
#if defined(__WATCOMC__) || defined(_MSC_VER)
#if defined(__WATCOMC__) || defined(_MSC_VER) || defined(PYCC_VACPP)
res = mkdir(path);
#else
res = mkdir(path, mode);
@ -1246,8 +1353,23 @@ posix_kill(self, args)
int pid, sig;
if (!PyArg_Parse(args, "(ii)", &pid, &sig))
return NULL;
#if defined(__TOS_OS2__)
if (sig == XCPT_SIGNAL_INTR || sig == XCPT_SIGNAL_BREAK) {
APIRET rc;
if ((rc = DosSendSignalException(pid, sig)) != NO_ERROR)
return posix_error();
} else if (sig == XCPT_SIGNAL_KILLPROC) {
APIRET rc;
if ((rc = DosKillProcess(DKP_PROCESS, pid)) != NO_ERROR)
return posix_error();
} else
return NULL; // Unrecognized Signal Requested
#else
if (kill(pid, sig) == -1)
return posix_error();
#endif
Py_INCREF(Py_None);
return Py_None;
}
@ -1284,6 +1406,108 @@ static char posix_popen__doc__[] =
"popen(command [, mode='r' [, bufsize]]) -> pipe\n\
Open a pipe to/from a command returning a file object.";
#if defined(PYOS_OS2)
int
async_system(const char *command)
{
char *p, errormsg[256], args[1024];
RESULTCODES rcodes;
APIRET rc;
char *shell = getenv("COMSPEC");
if (!shell)
shell = "cmd";
strcpy(args, shell);
p = &args[ strlen(args)+1 ];
strcpy(p, "/c ");
strcat(p, command);
p += strlen(p) + 1;
*p = '\0';
rc = DosExecPgm(errormsg, sizeof(errormsg),
EXEC_ASYNC, // Execute Async w/o Wait for Results
args,
NULL, // Inherit Parent's Environment
&rcodes, shell);
return rc;
}
FILE *
popen(const char *command, const char *mode, int pipesize)
{
HFILE rhan, whan;
FILE *retfd = NULL;
APIRET rc = DosCreatePipe(&rhan, &whan, pipesize);
if (rc != NO_ERROR)
return NULL; // ERROR - Unable to Create Anon Pipe
if (strchr(mode, 'r') != NULL) { // Treat Command as a Data Source
int oldfd = dup(1); // Save STDOUT Handle in Another Handle
DosEnterCritSec(); // Stop Other Threads While Changing Handles
close(1); // Make STDOUT Available for Reallocation
if (dup2(whan, 1) == 0) { // Connect STDOUT to Pipe Write Side
DosClose(whan); // Close Now-Unused Pipe Write Handle
if (async_system(command) == NO_ERROR)
retfd = fdopen(rhan, "rb"); // And Return Pipe Read Handle
}
dup2(oldfd, 1); // Reconnect STDOUT to Original Handle
DosExitCritSec(); // Now Allow Other Threads to Run
close(oldfd); // And Close Saved STDOUT Handle
return retfd; // Return fd of Pipe or NULL if Error
} else if (strchr(mode, 'w')) { // Treat Command as a Data Sink
int oldfd = dup(0); // Save STDIN Handle in Another Handle
DosEnterCritSec(); // Stop Other Threads While Changing Handles
close(0); // Make STDIN Available for Reallocation
if (dup2(rhan, 0) == 0) { // Connect STDIN to Pipe Read Side
DosClose(rhan); // Close Now-Unused Pipe Read Handle
if (async_system(command) == NO_ERROR)
retfd = fdopen(whan, "wb"); // And Return Pipe Write Handle
}
dup2(oldfd, 0); // Reconnect STDIN to Original Handle
DosExitCritSec(); // Now Allow Other Threads to Run
close(oldfd); // And Close Saved STDIN Handle
return retfd; // Return fd of Pipe or NULL if Error
} else
return NULL; // ERROR - Invalid Mode (Neither Read nor Write)
}
static PyObject *
posix_popen(self, args)
PyObject *self;
PyObject *args;
{
char *name;
char *mode = "r";
int bufsize = -1;
FILE *fp;
PyObject *f;
if (!PyArg_ParseTuple(args, "s|si", &name, &mode, &bufsize))
return NULL;
Py_BEGIN_ALLOW_THREADS
fp = popen(name, mode, (bufsize > 0) ? bufsize : 4096);
Py_END_ALLOW_THREADS
if (fp == NULL)
return posix_error();
f = PyFile_FromFile(fp, name, mode, fclose);
if (f != NULL)
PyFile_SetBufSize(f, bufsize);
return f;
}
#else
static PyObject *
posix_popen(self, args)
PyObject *self;
@ -1306,6 +1530,8 @@ posix_popen(self, args)
PyFile_SetBufSize(f, bufsize);
return f;
}
#endif
#endif /* HAVE_POPEN */
@ -1840,6 +2066,21 @@ posix_pipe(self, args)
PyObject *self;
PyObject *args;
{
#if defined(PYOS_OS2)
HFILE read, write;
APIRET rc;
if (!PyArg_Parse(args, ""))
return NULL;
Py_BEGIN_ALLOW_THREADS
rc = DosCreatePipe( &read, &write, 4096);
Py_END_ALLOW_THREADS
if (rc != NO_ERROR)
return posix_error();
return Py_BuildValue("(ii)", read, write);
#else
#if !defined(MS_WIN32)
int fds[2];
int res;
@ -1863,6 +2104,7 @@ posix_pipe(self, args)
return posix_error();
return Py_BuildValue("(ii)", read, write);
#endif /* MS_WIN32 */
#endif
}
#endif /* HAVE_PIPE */
@ -2259,9 +2501,14 @@ all_ins(d)
#define INITFUNC initnt
#define MODNAME "nt"
#else
#if defined(PYOS_OS2)
#define INITFUNC initos2
#define MODNAME "os2"
#else
#define INITFUNC initposix
#define MODNAME "posix"
#endif
#endif
void
INITFUNC()

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@ -48,6 +48,11 @@ extern void bzero();
#include <sys/types.h>
#if defined(PYOS_OS2)
#include <sys/time.h>
#include <utils.h>
#endif
#ifdef MS_WINDOWS
#include <winsock.h>
#else

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@ -50,6 +50,11 @@ PERFORMANCE OF THIS SOFTWARE.
#define SIG_ERR ((RETSIGTYPE (*)())-1)
#endif
#if defined(PYOS_OS2)
#define NSIG 12
#include <process.h>
#endif
#ifndef NSIG
#ifdef _SIGMAX
#define NSIG (_SIGMAX + 1) /* For QNX */

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@ -91,10 +91,25 @@ Socket methods:
#include <unistd.h>
#endif
#ifndef MS_WINDOWS
#if !defined(MS_WINDOWS) && !defined(PYOS_OS2)
extern int gethostname(); /* For Solaris, at least */
#endif
#if defined(PYCC_VACPP)
#include <types.h>
#include <io.h>
#include <sys/ioctl.h>
#include <utils.h>
#include <ctype.h>
#endif
#if defined(PYOS_OS2)
#define INCL_DOS
#define INCL_DOSERRORS
#define INCL_NOPMAPI
#include <os2.h>
#endif
#include <sys/types.h>
#include "mytime.h"
@ -136,6 +151,12 @@ extern int gethostname(); /* For Solaris, at least */
#define FORCE_ANSI_FUNC_DEFS
#endif
#if defined(PYOS_OS2)
#define close soclose
#define NO_DUP /* Sockets are Not Actual File Handles under OS/2 */
#define FORCE_ANSI_FUNC_DEFS
#endif
#ifdef FORCE_ANSI_FUNC_DEFS
#define BUILD_FUNC_DEF_1( fnname, arg1type, arg1name ) \
fnname( arg1type arg1name )
@ -198,6 +219,36 @@ PySocket_Err()
}
else
#endif
#if defined(PYOS_OS2)
if (sock_errno() != NO_ERROR) {
APIRET rc;
ULONG msglen;
char outbuf[100];
int myerrorcode = sock_errno();
/* Retrieve Socket-Related Error Message from MPTN.MSG File */
rc = DosGetMessage(NULL, 0, outbuf, sizeof(outbuf),
myerrorcode - SOCBASEERR + 26, "mptn.msg", &msglen);
if (rc == NO_ERROR) {
PyObject *v;
outbuf[msglen] = '\0'; /* OS/2 Doesn't Guarantee a Terminator */
if (strlen(outbuf) > 0) { /* If Non-Empty Msg, Trim CRLF */
char *lastc = &outbuf[ strlen(outbuf)-1 ];
while (lastc > outbuf && isspace(*lastc))
*lastc-- = '\0'; /* Trim Trailing Whitespace (CRLF) */
}
v = Py_BuildValue("(is)", myerrorcode, outbuf);
if (v != NULL) {
PyErr_SetObject(PySocket_Error, v);
Py_DECREF(v);
}
return NULL;
}
}
#endif
return PyErr_SetFromErrno(PySocket_Error);
}
@ -527,16 +578,21 @@ BUILD_FUNC_DEF_2(PySocketSock_setblocking,PySocketSockObject*,s,PyObject*,args)
return NULL;
Py_BEGIN_ALLOW_THREADS
#ifndef MS_WINDOWS
#ifdef PYOS_OS2
block = !block;
ioctl(s->sock_fd, FIONBIO, (caddr_t)&block, sizeof(block));
#else /* !PYOS_OS2 */
delay_flag = fcntl (s->sock_fd, F_GETFL, 0);
if (block)
delay_flag &= (~O_NDELAY);
else
delay_flag |= O_NDELAY;
fcntl (s->sock_fd, F_SETFL, delay_flag);
#else
#endif /* !PYOS_OS2 */
#else /* MS_WINDOWS */
block = !block;
ioctlsocket(s->sock_fd, FIONBIO, (u_long*)&block);
#endif
#endif /* MS_WINDOWS */
Py_END_ALLOW_THREADS
Py_INCREF(Py_None);
@ -883,7 +939,11 @@ BUILD_FUNC_DEF_2(PySocketSock_recvfrom,PySocketSockObject *,s, PyObject *,args)
Py_BEGIN_ALLOW_THREADS
n = recvfrom(s->sock_fd, PyString_AsString(buf), len, flags,
#ifndef MS_WINDOWS
#if defined(PYOS_OS2)
(struct sockaddr *)addrbuf, &addrlen
#else
(ANY *)addrbuf, &addrlen
#endif
#else
(struct sockaddr *)addrbuf, &addrlen
#endif
@ -1388,22 +1448,57 @@ NTinit()
#endif /* MS_WINDOWS */
#if defined(PYOS_OS2)
/* Additional initialization and cleanup for OS/2 */
static void
OS2cleanup()
{
/* No cleanup is necessary for OS/2 Sockets */
}
static int
OS2init()
{
char reason[64];
int rc = sock_init();
if (rc == 0) {
atexit(OS2cleanup);
return 1; // Indicate Success
}
sprintf(reason, "OS/2 TCP/IP Error# %d", sock_errno());
PyErr_SetString(PyExc_ImportError, reason);
return 0; // Indicate Failure
}
#endif /* PYOS_OS2 */
/* Initialize this module.
This is called when the first 'import socket' is done,
via a table in config.c, if config.c is compiled with USE_SOCKET
defined.
For MS_WINDOWS (which means any Windows variant), this module
is actually called "_socket", and there's a wrapper "socket.py"
which implements some missing functionality (such as makefile(),
dup() and fromfd()). The import of "_socket" may fail with an
ImportError exception if initialization of WINSOCK fails. When
WINSOCK is initialized succesfully, a call to WSACleanup() is
scheduled to be made at exit time. */
* This is called when the first 'import socket' is done,
* via a table in config.c, if config.c is compiled with USE_SOCKET
* defined.
*
* For MS_WINDOWS (which means any Windows variant), this module
* is actually called "_socket", and there's a wrapper "socket.py"
* which implements some missing functionality (such as makefile(),
* dup() and fromfd()). The import of "_socket" may fail with an
* ImportError exception if initialization of WINSOCK fails. When
* WINSOCK is initialized succesfully, a call to WSACleanup() is
* scheduled to be made at exit time.
*
* For OS/2, this module is also called "_socket" and uses a wrapper
* "socket.py" which implements that functionality that is missing
* when PC operating systems don't put socket descriptors in the
* operating system's filesystem layer.
*/
void
#ifdef MS_WINDOWS
#if defined(MS_WINDOWS) || defined(PYOS_OS2)
init_socket()
#else
initsocket()
@ -1415,7 +1510,13 @@ initsocket()
return;
m = Py_InitModule("_socket", PySocket_methods);
#else
#if defined(__TOS_OS2__)
if (!OS2init())
return;
m = Py_InitModule("_socket", PySocket_methods);
#else
m = Py_InitModule("socket", PySocket_methods);
#endif
#endif
d = PyModule_GetDict(m);
PySocket_Error = PyErr_NewException("socket.error", NULL, NULL);

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@ -59,7 +59,7 @@ PERFORMANCE OF THIS SOFTWARE.
#ifdef HAVE_FTIME
#include <sys/timeb.h>
#ifndef MS_WINDOWS
#if !defined(MS_WINDOWS) && !defined(PYOS_OS2)
extern int ftime();
#endif /* MS_WINDOWS */
#endif /* HAVE_FTIME */
@ -85,6 +85,18 @@ extern int ftime();
#undef HAVE_CLOCK /* We have our own version down below */
#endif /* MS_WIN32 */
#if defined(PYOS_OS2)
#define INCL_DOS
#define INCL_DOSERRORS
#define INCL_NOPMAPI
#include <os2.h>
#endif
#if defined(PYCC_VACPP)
#include <time.h>
#define timezone _timezone
#endif
/* Forward declarations */
static int floatsleep Py_PROTO((double));
static double floattime Py_PROTO(());
@ -588,10 +600,18 @@ floatsleep(double secs)
Sleep((int)(secs*1000));
Py_END_ALLOW_THREADS
#else /* !MS_WIN32 */
#ifdef PYOS_OS2
/* This Sleep *IS* Interruptable by Exceptions */
if (DosSleep(secs * 1000) != NO_ERROR) {
PyErr_SetFromErrno(PyExc_IOError);
return -1;
}
#else /* !PYOS_OS2 */
/* XXX Can't interrupt this sleep */
Py_BEGIN_ALLOW_THREADS
sleep((int)secs);
Py_END_ALLOW_THREADS
#endif /* !PYOS_OS2 */
#endif /* !MS_WIN32 */
#endif /* !MSDOS */
#endif /* !__WATCOMC__ */

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@ -47,6 +47,7 @@ PERFORMANCE OF THIS SOFTWARE.
_AIX -- AIX style dynamic linking
MS_WIN32 -- Windows NT style dynamic linking (using DLLs)
MS_WIN16 -- Windows 16-bit dynamic linking (using DLLs)
PYOS_OS2 -- IBM OS/2 dynamic linking (using DLLs)
_DL_FUNCPTR_DEFINED -- if the typedef dl_funcptr has been defined
USE_MAC_DYNAMIC_LOADING -- Mac CFM shared libraries
SHORT_EXT -- short extension for dynamic module, e.g. ".so"
@ -76,6 +77,17 @@ typedef void (*dl_funcptr)();
#define LONG_EXT "module.sl"
#endif
#if defined(PYOS_OS2)
#define DYNAMIC_LINK
#define INCL_DOSERRORS
#define INCL_DOSMODULEMGR
#include <os2.h>
typedef int (* APIENTRY dl_funcptr)();
#define _DL_FUNCPTR_DEFINED 1
#define SHORT_EXT ".pyd"
#define LONG_EXT ".dll"
#endif
#if defined(__NetBSD__)
#define DYNAMIC_LINK
#define USE_SHLIB
@ -458,6 +470,32 @@ _PyImport_LoadDynamicModule(name, pathname, fp)
p = GetProcAddress(hDLL, funcname);
}
#endif /* MS_WIN16 */
#if defined(PYOS_OS2)
{
APIRET rc;
HMODULE hDLL;
char failreason[256];
rc = DosLoadModule(failreason,
sizeof(failreason),
pathname,
&hDLL);
if (rc != NO_ERROR) {
char errBuf[256];
sprintf(errBuf,
"DLL load failed, rc = %d, problem '%s': %s", rc, failreason);
PyErr_SetString(PyExc_ImportError, errBuf);
return NULL;
}
rc = DosQueryProcAddr(hDLL, 0L, funcname, &p);
if (rc != NO_ERROR)
p = NULL; /* Signify Failure to Acquire Entrypoint */
}
#endif /* PYOS_OS2 */
#ifdef USE_DL
p = dl_loadmod(Py_GetProgramName(), pathname, funcname);
#endif /* USE_DL */

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@ -149,6 +149,10 @@ void init_thread _P0()
#include "thread_nt.h"
#endif
#ifdef OS2_THREADS
#include "thread_os2.h"
#endif
/*
#ifdef FOOBAR_THREADS
#include "thread_foobar.h"

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@ -56,7 +56,7 @@ int start_new_thread(void (*func)(void *), void *arg)
int aThread;
int success = 1;
aThread = _beginthread(func,4096,arg);
aThread = _beginthread(func,NULL,65536,arg);
if( aThread == -1 ) {
success = 0;
@ -210,7 +210,7 @@ void free_sema(type_sema aSemaphore)
}
void down_sema(type_sema aSemaphore, int waitflag)
int down_sema(type_sema aSemaphore, int waitflag)
{
return -1;
}