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* dll_init.cc (dll_list::find_by_modname): New function to search the dll list

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for a module name only (no path).
(dll_list::alloc): Initialize newly-added members of struct dll.
(dll_list::append): New function to factor out the append operation
(used by dll_list::topsort).
(dll_list::populate_deps): New function to identify dll dependencies.
(dll_list::topsort): New function to sort the dll list topologically by
dependencies.
(dll_list::topsort_visit): New helper function for the above.
* dll_init.h (dll::ndeps): New class member.
(dll::deps): Ditto.
(dll::modname): Ditto.
(dll_list::find_by_modname): New function related to topsort.
(dll_list::populate_all_deps): Ditto.
(dll_list::populate_deps): Ditto.
(dll_list::topsort): Ditto.
(dll_list::topsort_visit): Ditto.
(dll_list::append): Ditto.
(pefile): New struct allowing simple introspection of dll images.
* fork.cc (fork): Topologically sort the dll list before forking.
This commit is contained in:
Christopher Faylor
2011-05-28 20:17:09 +00:00
parent 8551087823
commit a92339ab63
4 changed files with 191 additions and 9 deletions
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29
winsup/cygwin/dll_init.h
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@@ -52,6 +52,9 @@ struct dll
int count;
bool has_dtors;
dll_type type;
long ndeps;
dll** deps;
PWCHAR modname;
WCHAR name[1];
void detach ();
int init ();
@@ -84,6 +87,13 @@ public:
void detach (void *);
void init ();
void load_after_fork (HANDLE);
dll *find_by_modname (const PWCHAR name);
void populate_all_deps ();
void populate_deps (dll* d);
void topsort ();
void topsort_visit (dll* d, bool goto_tail);
void append (dll* d);
dll *inext ()
{
while ((hold = hold->next))
@@ -109,6 +119,25 @@ public:
dll_list () { protect.init ("dll_list"); }
};
/* References:
http://msdn.microsoft.com/en-us/windows/hardware/gg463125
http://msdn.microsoft.com/en-us/library/ms809762.aspx
*/
/* FIXME: Integrate with other similar uses in source. */
struct pefile
{
IMAGE_DOS_HEADER dos_hdr;
char* rva (long offset) { return (char*) this + offset; }
PIMAGE_NT_HEADERS32 pe_hdr () { return (PIMAGE_NT_HEADERS32) rva (dos_hdr.e_lfanew); }
PIMAGE_OPTIONAL_HEADER32 optional_hdr () { return &pe_hdr ()->OptionalHeader; }
PIMAGE_DATA_DIRECTORY idata_dir (DWORD which)
{
PIMAGE_OPTIONAL_HEADER32 oh = optional_hdr ();
return (which < oh->NumberOfRvaAndSizes)? oh->DataDirectory + which : 0;
}
};
extern dll_list dlls;
void dll_global_dtors ();