2eb392bd77
detect when there are no fds to pass. * dcrt0.cc (host_dependent_constants::init): Revert Sat Mar 18 01:32:04 2000 change. (dll_crt0_1): Set "cygwin_finished_initializing" flag. (dll_crt0): Don't perform memcpy if uptr is already set to internal structure. (_dll_crt0): Remember location of programs envptr. * dll_init.h (per_module, dll, dll_list): Revamp. * dll_init.cc: Revamp. Use new classes. * fork.cc (fork): Use new revamped dll, dll_list, and per_module stuff. * environ.cc: Use __cygwin_environ throughout rather than the user_data->envptr. * exec.cc: Ditto. * spawn.cc: Ditto. * winsup.h: Declare update_envptrs, cygwin_finished_initializing. * lib/_cygwin_crt0_common.cc (_cygwin_crt0_common): Revert previous change. * lib/cygwin_attach_dll.cc (cygwin_attach_dll): Always pass in own per_process structure or we end up overwriting information from the main program.
92 lines
1.6 KiB
C++
92 lines
1.6 KiB
C++
/* dll_init.h
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Copyright 1998, 1999, 2000 Cygnus Solutions
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This file is part of Cygwin.
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This software is a copyrighted work licensed under the terms of the
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Cygwin license. Please consult the file "CYGWIN_LICENSE" for
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details. */
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struct per_module
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{
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char ***envptr;
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void (**ctors)(void);
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void (**dtors)(void);
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void *data_start;
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void *data_end;
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void *bss_start;
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void *bss_end;
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int (*main)(int, char **, char **);
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per_module &operator = (per_process *p)
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{
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envptr = p->envptr;
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ctors = p->ctors;
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dtors = p->dtors;
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data_start = p->data_start;
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data_end = p->data_end;
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bss_start = p->bss_start;
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bss_end = p->bss_end;
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main = p->main;
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return *this;
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}
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void run_ctors ();
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void run_dtors ();
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};
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typedef enum
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{
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DLL_NONE,
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DLL_LINK,
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DLL_LOAD,
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DLL_ANY
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} dll_type;
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struct dll
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{
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struct dll *next, *prev;
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per_module p;
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HMODULE handle;
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int count;
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dll_type type;
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int namelen;
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char name[MAX_PATH + 1];
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void detach ();
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int init ();
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};
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#define MAX_DLL_BEFORE_INIT 100
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class dll_list
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{
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dll *end;
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dll *hold;
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dll_type hold_type;
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public:
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dll start;
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int tot;
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int loaded_dlls;
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int reload_on_fork;
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dll *operator [] (const char *name);
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dll *alloc (HINSTANCE, per_process *, dll_type);
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void detach (dll *);
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void init ();
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void load_after_fork (HANDLE, dll *);
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dll *istart (dll_type t)
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{
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hold_type = t;
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hold = &start;
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return inext ();
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}
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dll *inext ()
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{
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while ((hold = hold->next))
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if (hold_type == DLL_ANY || hold->type == hold_type)
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break;
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return hold;
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}
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};
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extern dll_list dlls;
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