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newlib-cygwin
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Throughout, rename PROC_FORK1 to PROC_FORK. 

* child_info.h: Rename PROC_* to _PROC_*.  Define PROC_* with additional
testing magic.  Eliminate old PROC_FORK and rename PROC_FORK1 to PROC_FORK.
* dcrt0.cc (_cygwin_testing_magic): New variable.  Added to magic number in
proc_info.
(alloc_stack): Eliminate old PROC_FORK test.
(dll_crt0_1): Ditto.  Use _PROC_* enums for test.  Subtract
_cygwin_testing_magic from child_proc_info->type so that normal cygwin programs
invoked by test suite programs do not consider themselves to be in a cygwin
environment.
(_dll_crt0): Ditto.  Move environment checks to initial_env function to
conserve on stack space.
(initial_env): New function.  Checks for testing and debugging environment
variables.
* init.cc (cygwin_hmodule): Move declaration.
* winsup.h: Declare variables used for cygwin testing.
This commit is contained in:
Christopher Faylor 2001-10-10 02:32:12 +00:00
parent b2a8510b89
commit 57013c31ec
6 changed files with 73 additions and 41 deletions
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20
winsup/cygwin/ChangeLog
View File

@ -1,3 +1,23 @@
Tue Oct 9 22:22:45 2001 Christopher Faylor <cgf@cygnus.com>
Throughout, rename PROC_FORK1 to PROC_FORK.
* child_info.h: Rename PROC_* to _PROC_*. Define PROC_* with
additional testing magic. Eliminate old PROC_FORK and rename
PROC_FORK1 to PROC_FORK.
* dcrt0.cc (_cygwin_testing_magic): New variable. Added to magic
number in proc_info.
(alloc_stack): Eliminate old PROC_FORK test.
(dll_crt0_1): Ditto. Use _PROC_* enums for test. Subtract
_cygwin_testing_magic from child_proc_info->type so that normal cygwin
programs invoked by test suite programs do not consider themselves to
be in a cygwin environment.
(_dll_crt0): Ditto. Move environment checks to initial_env function to
conserve on stack space.
(initial_env): New function. Checks for testing and debugging
environment variables.
* init.cc (cygwin_hmodule): Move declaration.
* winsup.h: Declare variables used for cygwin testing.
Tue Oct 9 19:17:53 2001 Christopher Faylor <cgf@cygnus.com>
* uinfo.cc (internal_getlogin): Reorganize slightly to minimize work in

12
winsup/cygwin/child_info.h
View File

@ -13,18 +13,20 @@ details. */
enum
{
PROC_MAGIC = 0xaf12f000,
PROC_FORK = PROC_MAGIC + 1,
PROC_EXEC = PROC_MAGIC + 2,
PROC_SPAWN = PROC_MAGIC + 3,
PROC_FORK1 = PROC_MAGIC + 4, // Newer versions provide stack
_PROC_EXEC = PROC_MAGIC + 2,
_PROC_SPAWN = PROC_MAGIC + 3,
_PROC_FORK = PROC_MAGIC + 4, // Newer versions provide stack
// location information
PROC_SPAWN1 = PROC_MAGIC + 5
};
#define PROC_MAGIC_MASK 0xff00f000
#define PROC_MAGIC_GENERIC 0xaf00f000
#define PROC_MAGIC_VER_MASK 0x0ff0000
#define PROC_EXEC (_PROC_EXEC + _cygwin_testing_magic)
#define PROC_SPAWN (_PROC_SPAWN + _cygwin_testing_magic)
#define PROC_FORK (_PROC_FORK + _cygwin_testing_magic)
#define EXEC_MAGIC_SIZE sizeof(child_info)
class child_info
{

74
winsup/cygwin/dcrt0.cc
View File

@ -72,6 +72,7 @@ ResourceLocks _reslock NO_COPY;
MTinterface _mtinterf;
bool NO_COPY _cygwin_testing;
unsigned NO_COPY _cygwin_testing_magic;
extern "C"
{
@ -515,18 +516,13 @@ alloc_stack (child_info_fork *ci)
fork on Win95, but I don't know exactly why yet. DJ */
volatile char b[ci->stacksize + 16384];
if (ci->type == PROC_FORK)
ci->stacksize = 0; // flag to fork not to do any funny business
else
{
if (!VirtualQuery ((LPCVOID) &b, &sm, sizeof sm))
api_fatal ("fork: couldn't get stack info, %E");
if (!VirtualQuery ((LPCVOID) &b, &sm, sizeof sm))
api_fatal ("fork: couldn't get stack info, %E");
if (sm.AllocationBase != ci->stacktop)
alloc_stack_hard_way (ci, b + sizeof (b) - 1);
else
ci->stacksize = 0;
}
if (sm.AllocationBase != ci->stacktop)
alloc_stack_hard_way (ci, b + sizeof (b) - 1);
else
ci->stacksize = 0;
return;
}
@ -588,20 +584,19 @@ dll_crt0_1 ()
if (child_proc_info)
{
switch (child_proc_info->type)
switch (child_proc_info->type - _cygwin_testing_magic)
{
case PROC_FORK:
case PROC_FORK1:
case _PROC_FORK:
cygheap_fixup_in_child (child_proc_info, 0);
alloc_stack (fork_info);
set_myself (mypid);
ProtectHandle (child_proc_info->forker_finished);
break;
case PROC_SPAWN:
case _PROC_SPAWN:
if (spawn_info->hexec_proc)
CloseHandle (spawn_info->hexec_proc);
goto around;
case PROC_EXEC:
case _PROC_EXEC:
hexec_proc = spawn_info->hexec_proc;
around:
HANDLE h;
@ -773,6 +768,31 @@ dll_crt0_1 ()
exit (user_data->main (__argc, __argv, *user_data->envptr));
}
void
initial_env ()
{
char buf[MAX_PATH + 1];
#ifdef DEBUGGING
if (GetEnvironmentVariable ("CYGWIN_SLEEP", buf, sizeof (buf) - 1))
{
console_printf ("Sleeping %d, pid %u\n", atoi (buf), GetCurrentProcessId ());
Sleep (atoi (buf));
}
#endif
if (GetEnvironmentVariable ("CYGWIN_TESTING", buf, sizeof (buf) - 1))
{
_cygwin_testing = 1;
DWORD len;
if ((len = GetModuleFileName (cygwin_hmodule, buf, MAX_PATH))
&& len > sizeof ("new-cygwin1.dll")
&& strcasematch (buf + len - sizeof ("new-cygwin1.dll"),
"\\new-cygwin1.dll"))
_cygwin_testing_magic = 0x10;
}
}
/* Wrap the real one, otherwise gdb gets confused about
two symbols with the same name, but different addresses.
@ -782,18 +802,7 @@ dll_crt0_1 ()
extern "C" void __stdcall
_dll_crt0 ()
{
char envbuf[8];
#ifdef DEBUGGING
if (GetEnvironmentVariable ("CYGWIN_SLEEP", envbuf, sizeof (envbuf) - 1))
{
console_printf ("Sleeping %d, pid %u\n", atoi (envbuf), GetCurrentProcessId ());
Sleep (atoi (envbuf));
}
#endif
if (GetEnvironmentVariable ("CYGWIN_TESTING", envbuf, sizeof (envbuf) - 1))
_cygwin_testing = 1;
initial_env ();
char zeros[sizeof (fork_info->zero)] = {0};
#ifdef DEBUGGING
strace.microseconds ();
@ -815,15 +824,14 @@ _dll_crt0 ()
if (si.cbReserved2 >= EXEC_MAGIC_SIZE &&
memcmp (fork_info->zero, zeros, sizeof (zeros)) == 0)
{
switch (fork_info->type)
switch (fork_info->type - _cygwin_testing_magic)
{
case PROC_FORK:
case PROC_FORK1:
case _PROC_FORK:
user_data->forkee = fork_info->cygpid;
case PROC_SPAWN:
case _PROC_SPAWN:
if (fork_info->pppid_handle)
CloseHandle (fork_info->pppid_handle);
case PROC_EXEC:
case _PROC_EXEC:
{
child_proc_info = fork_info;
cygwin_mount_h = child_proc_info->mount_h;

2
winsup/cygwin/fork.cc
View File

@ -429,7 +429,7 @@ fork_parent (HANDLE& hParent, dll *&first_dll,
ProtectHandle (subproc_ready);
ProtectHandle (forker_finished);
init_child_info (PROC_FORK1, &ch, 1, subproc_ready);
init_child_info (PROC_FORK, &ch, 1, subproc_ready);
ch.forker_finished = forker_finished;

2
winsup/cygwin/init.cc
View File

@ -13,8 +13,6 @@ details. */
#include "thread.h"
#include "perprocess.h"
extern HMODULE cygwin_hmodule;
int NO_COPY dynamically_loaded;
extern "C" int

4
winsup/cygwin/winsup.h
View File

@ -261,4 +261,8 @@ extern BOOL display_title;
extern HANDLE hMainThread;
extern HANDLE hMainProc;
extern bool cygwin_testing;
extern unsigned _cygwin_testing_magic;
extern HMODULE cygwin_hmodule;
#endif /* defined __cplusplus */