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* autoload.cc: Use new definition of LoadDLLinitfunc throughout. 

Redefine wrapper for wsock32.dll and ws2_32.dll.
        (std_dll_init): New function.
        * autoload.h: Rename LoadDLLinitfunc to LoadDLLinitfuncdef.
        Add new defines LoadDLLinitfunc and LoadDLLstdfunc.
        * net.cc (wsock_init): Add guard variable handling. Take care
        to call WSAStartup only once. Load WSAStartup without using
        autoload wrapper to eliminate recursion.  Eliminate FIONBIO
        and srandom stuff.
This commit is contained in:
Corinna Vinschen 2001-05-03 09:35:08 +00:00
parent b09e3cf8fd
commit a6a0193b2f
4 changed files with 84 additions and 216 deletions
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12
winsup/cygwin/ChangeLog
View File

@ -1,3 +1,15 @@
Wed May 2 20:18:00 2001 Corinna Vinschen <corinna@vinschen.de>
* autoload.cc: Use new definition of LoadDLLinitfunc throughout.
Redefine wrapper for wsock32.dll and ws2_32.dll.
(std_dll_init): New function.
* autoload.h: Rename LoadDLLinitfunc to LoadDLLinitfuncdef.
Add new defines LoadDLLinitfunc and LoadDLLstdfunc.
* net.cc (wsock_init): Add guard variable handling. Take care
to call WSAStartup only once. Load WSAStartup without using
autoload wrapper to eliminate recursion. Eliminate FIONBIO
and srandom stuff.
Tue May 1 01:26:15 2001 Christopher Faylor <cgf@cygnus.com>
* path.cc (mount_info::conv_to_win32_path): More path tweaking.

235
winsup/cygwin/autoload.cc
View File

@ -65,222 +65,51 @@ gotit:\n\
jmp *%eax\n\
");
int
std_dll_init (HANDLE &dll_handle, const char *dll_name, LONG &here)
{
HANDLE h;
while (InterlockedIncrement (&here))
{
InterlockedDecrement (&here);
Sleep (0);
}
if (dll_handle)
/* nothing to do */;
else if ((h = LoadLibrary (dll_name)) != NULL)
dll_handle = h;
else
api_fatal ("could not load %s, %E", dll_name);
InterlockedDecrement (&here);
return 0;
}
LoadDLLinitfunc (advapi32)
{
HANDLE h;
static NO_COPY LONG here = -1L;
while (InterlockedIncrement (&here))
{
InterlockedDecrement (&here);
Sleep (0);
}
if (advapi32_handle)
/* nothing to do */;
else if ((h = LoadLibrary ("advapi32.dll")) != NULL)
advapi32_handle = h;
else if (!advapi32_handle)
api_fatal ("could not load advapi32.dll, %E");
InterlockedDecrement (&here);
return 0;
}
LoadDLLinitfunc (netapi32)
{
HANDLE h;
static NO_COPY LONG here = -1L;
while (InterlockedIncrement (&here))
{
InterlockedDecrement (&here);
Sleep (0);
}
if ((h = LoadLibrary ("netapi32.dll")) != NULL)
netapi32_handle = h;
else if (! netapi32_handle)
api_fatal ("could not load netapi32.dll. %d", GetLastError ());
InterlockedDecrement (&here);
return 0;
}
LoadDLLinitfunc (ntdll)
{
HANDLE h;
static NO_COPY LONG here = -1L;
while (InterlockedIncrement (&here))
{
InterlockedDecrement (&here);
Sleep (0);
}
if (ntdll_handle)
/* nothing to do */;
else if ((h = LoadLibrary ("ntdll.dll")) != NULL)
ntdll_handle = h;
else if (!ntdll_handle)
api_fatal ("could not load ntdll.dll, %E");
InterlockedDecrement (&here);
return 0;
}
LoadDLLinitfunc (secur32)
{
HANDLE h;
static NO_COPY LONG here = -1L;
while (InterlockedIncrement (&here))
{
InterlockedDecrement (&here);
Sleep (0);
}
if (secur32_handle)
/* nothing to do */;
else if ((h = LoadLibrary ("secur32.dll")) != NULL)
secur32_handle = h;
else if (!secur32_handle)
api_fatal ("could not load secur32.dll, %E");
InterlockedDecrement (&here);
return 0; /* Already done by another thread? */
}
LoadDLLinitfunc (user32)
{
HANDLE h;
static NO_COPY LONG here = -1L;
while (InterlockedIncrement (&here))
{
InterlockedDecrement (&here);
Sleep (0);
}
if (user32_handle)
/* nothing to do */;
else if ((h = LoadLibrary ("user32.dll")) != NULL)
user32_handle = h;
else if (!user32_handle)
api_fatal ("could not load user32.dll, %E");
InterlockedDecrement (&here);
return 0; /* Already done by another thread? */
}
LoadDLLinitfunc (wsock32)
{
extern void wsock_init ();
HANDLE h;
if ((h = LoadLibrary ("wsock32.dll")) != NULL)
wsock32_handle = h;
else if (!wsock32_handle)
api_fatal ("could not load wsock32.dll. Is TCP/IP installed?");
else
return 0; /* Already done by another thread? */
if (!ws2_32_handle)
wsock_init ();
return 0;
}
LoadDLLinitfunc (ws2_32)
{
extern void wsock_init ();
HANDLE h;
if ((h = LoadLibrary ("ws2_32.dll")) == NULL)
return 0; /* Already done or not available. */
ws2_32_handle = h;
if (!wsock32_handle)
wsock_init ();
return 0;
}
LoadDLLinitfunc (iphlpapi)
{
HANDLE h;
static NO_COPY LONG here = -1L;
while (InterlockedIncrement (&here))
{
InterlockedDecrement (&here);
Sleep (0);
}
if (iphlpapi_handle)
/* nothing to do */;
else if ((h = LoadLibrary ("iphlpapi.dll")) != NULL)
iphlpapi_handle = h;
else if (!iphlpapi_handle)
api_fatal ("could not load iphlpapi.dll, %E");
InterlockedDecrement (&here);
return 0;
}
LoadDLLinitfunc (ole32)
{
HANDLE h;
static NO_COPY LONG here = -1L;
while (InterlockedIncrement (&here))
{
InterlockedDecrement (&here);
Sleep (0);
}
if (ole32_handle)
/* nothing to do */;
else if ((h = LoadLibrary ("ole32.dll")) != NULL)
ole32_handle = h;
else if (!ole32_handle)
api_fatal ("could not load ole32.dll, %E");
InterlockedDecrement (&here);
return 0;
}
LoadDLLinitfunc (kernel32)
LoadDLLinitfunc (winmm)
extern void wsock_init ();
LoadDLLinitfuncdef (wsock32)
{
HANDLE h;
if ((h = LoadLibrary ("kernel32.dll")) != NULL)
kernel32_handle = h;
else if (!kernel32_handle)
api_fatal ("could not load kernel32.dll, %E");
else
return 0; /* Already done by another thread? */
LoadDLLstdfunc (wsock32);
wsock_init ();
return 0;
}
LoadDLLinitfunc (winmm)
LoadDLLinitfuncdef (ws2_32)
{
HANDLE h;
static NO_COPY LONG here = -1L;
while (InterlockedIncrement (&here))
{
InterlockedDecrement (&here);
Sleep (0);
}
if ((h = LoadLibrary ("winmm.dll")) != NULL)
winmm_handle = h;
else if (! winmm_handle)
api_fatal ("could not load winmm.dll. %d", GetLastError ());
InterlockedDecrement (&here);
LoadDLLstdfunc (ws2_32);
wsock_init ();
return 0;
}

10
winsup/cygwin/autoload.h
View File

@ -11,10 +11,20 @@ Cygwin license. Please consult the file "CYGWIN_LICENSE" for
details. */
#define LoadDLLinitfunc(dllname) \
LoadDLLinitfuncdef(dllname) \
{ \
return LoadDLLstdfunc(dllname); \
}
#define LoadDLLinitfuncdef(dllname) \
HANDLE NO_COPY dllname ## _handle = NULL; \
LONG NO_COPY dllname ## _here = -1L; \
/*static*/ int dllname ## _init () __asm__ (#dllname "_init"); \
/*static*/ int dllname ## _init ()
#define LoadDLLstdfunc(dllname) \
std_dll_init (dllname ## _handle, #dllname ".dll", dllname ## _here)
#define LoadDLLinitnow(dllname) \
({__asm__ ("movl $cygwin_dll_func_load, " #dllname "_init_holder"); dllname##_init ();})

43
winsup/cygwin/net.cc
View File

@ -1928,21 +1928,38 @@ endhostent (void)
extern "C" void
wsock_init ()
{
int res = WSAStartup ((2<<8) | 2, &wsadata);
static LONG NO_COPY here = -1L;
static int NO_COPY was_in_progress = 0;
debug_printf ("res %d", res);
debug_printf ("wVersion %d", wsadata.wVersion);
debug_printf ("wHighVersion %d", wsadata.wHighVersion);
debug_printf ("szDescription %s", wsadata.szDescription);
debug_printf ("szSystemStatus %s", wsadata.szSystemStatus);
debug_printf ("iMaxSockets %d", wsadata.iMaxSockets);
debug_printf ("iMaxUdpDg %d", wsadata.iMaxUdpDg);
debug_printf ("lpVendorInfo %d", wsadata.lpVendorInfo);
while (InterlockedIncrement (&here))
{
InterlockedDecrement (&here);
Sleep (0);
}
if (!was_in_progress && (wsock32_handle || ws2_32_handle))
{
/* Don't use autoload to load WSAStartup to eliminate recursion. */
int (*wsastartup) (int, WSADATA *);
if (FIONBIO != REAL_FIONBIO)
debug_printf ("**************** FIONBIO != REAL_FIONBIO");
wsastartup = (int (*)(int, WSADATA *))
GetProcAddress ((HMODULE) (wsock32_handle ?: ws2_32_handle),
"WSAStartup");
if (wsastartup)
{
int res = wsastartup ((2<<8) | 2, &wsadata);
/* FIXME: will resulting random sequence be unpredictable enough? */
srandom (GetTickCount ());
debug_printf ("res %d", res);
debug_printf ("wVersion %d", wsadata.wVersion);
debug_printf ("wHighVersion %d", wsadata.wHighVersion);
debug_printf ("szDescription %s", wsadata.szDescription);
debug_printf ("szSystemStatus %s", wsadata.szSystemStatus);
debug_printf ("iMaxSockets %d", wsadata.iMaxSockets);
debug_printf ("iMaxUdpDg %d", wsadata.iMaxUdpDg);
debug_printf ("lpVendorInfo %d", wsadata.lpVendorInfo);
was_in_progress = 1;
}
}
InterlockedDecrement (&here);
}