tlssup.c File Reference

#include <sect_attribs.h>
#include <windows.h>
#include <stdio.h>
#include <memory.h>
#include <malloc.h>
#include <corecrt_startup.h>

Include dependency graph for tlssup.c:

Go to the source code of this file.

Classes
struct	TlsDtorNode

Macros
#define	WIN32_LEAN_AND_MEAN
#define	FUNCS_PER_NODE   30
#define	__CRT_THREAD   __thread
#define	DISABLE_MS_TLS   1

Typedefs
typedef struct TlsDtorNode	TlsDtorNode

Functions
WINBOOL	__mingw_TLScallback (HANDLE hDllHandle, DWORD reason, LPVOID reserved)
	_CRTALLOC (".tls")
static	_CRTALLOC (".CRT$XDA")
	_CRTALLOC (".CRT$XLC")
static BOOL WINAPI	__dyn_tls_dtor (HANDLE hDllHandle, DWORD dwReason, LPVOID lpreserved)

Variables
ULONG	_tls_index = 0
const PIMAGE_TLS_CALLBACK	__dyn_tls_init_callback = (const PIMAGE_TLS_CALLBACK) __dyn_tls_init

Macro Definition Documentation

__CRT_THREAD

#define __CRT_THREAD   __thread

Definition at line 61 of file tlssup.c.

DISABLE_MS_TLS

#define DISABLE_MS_TLS   1

Definition at line 65 of file tlssup.c.

FUNCS_PER_NODE

#define FUNCS_PER_NODE   30

Definition at line 31 of file tlssup.c.

WIN32_LEAN_AND_MEAN

#define WIN32_LEAN_AND_MEAN

This file has no copyright assigned and is placed in the Public Domain. This file is part of the mingw-w64 runtime package. No warranty is given; refer to the file DISCLAIMER.PD within this package.

Written by Kai Tietz kai.t.nosp@m.ietz.nosp@m.@onev.nosp@m.isio.nosp@m.n.com

Definition at line 16 of file tlssup.c.

Typedef Documentation

TlsDtorNode

typedef struct TlsDtorNode TlsDtorNode

Function Documentation

__dyn_tls_dtor()

static BOOL WINAPI __dyn_tls_dtor ( HANDLE  hDllHandle, DWORD  dwReason, LPVOID  lpreserved  )

static

Definition at line 140 of file tlssup.c.

{
#if !defined (DISABLE_MS_TLS)
  TlsDtorNode *pnode, *pnext;
  int i;
#endif
 
  if (dwReason != DLL_THREAD_DETACH && dwReason != DLL_PROCESS_DETACH)
    return TRUE;
  /* As TLS variables are detroyed already by DLL_THREAD_DETACH
     call, we have to avoid access on the possible DLL_PROCESS_DETACH
     call the already destroyed TLS vars.
     TODO: The used local thread based variables have to be handled
     manually, so that we can control their lifetime here.  */
#if !defined (DISABLE_MS_TLS)
  if (dwReason != DLL_PROCESS_DETACH)
    {
      for (pnode = dtor_list; pnode != NULL; pnode = pnext)
        {
          for (i = pnode->count - 1; i >= 0; --i)
        {
          if (pnode->funcs[i] != NULL)
            (*pnode->funcs[i])();
        }
          pnext = pnode->next;
          if (pnext != NULL)
        free ((void *) pnode);
        }
    }
#endif
  __mingw_TLScallback (hDllHandle, dwReason, lpreserved);
  return TRUE;
}

__mingw_TLScallback()

WINBOOL __mingw_TLScallback	(	HANDLE	hDllHandle,
		DWORD	reason,
		LPVOID	reserved
	)

Referenced by __dyn_tls_dtor().

_CRTALLOC() [1/3]

static _CRTALLOC ( ".CRT$XDA"  )

static

Definition at line 67 of file tlssup.c.

{
  _PVFV *pfunc;
  uintptr_t ps;
 
  /* We don't let us trick here.  */
  if (_CRT_MT != 2)
   _CRT_MT = 2;
 
  if (dwReason != DLL_THREAD_ATTACH)
    {
      if (dwReason == DLL_PROCESS_ATTACH)
        __mingw_TLScallback (hDllHandle, dwReason, lpreserved);
      return TRUE;
    }
 
  ps = (uintptr_t) &__xd_a;
  ps += sizeof (uintptr_t);
  for ( ; ps != (uintptr_t) &__xd_z; ps += sizeof (uintptr_t))
    {
      pfunc = (_PVFV *) ps;
      if (*pfunc != NULL)
    (*pfunc)();
    }
  return TRUE;
}

_CRTALLOC() [2/3]

_CRTALLOC

(

".CRT$XLC"

)

Definition at line 108 of file tlssup.c.

{
  if (!func)
    return 0;
#if !defined (DISABLE_MS_TLS)
  if (dtor_list == NULL)
    {
      dtor_list = &dtor_list_head;
      dtor_list_head.count = 0;
    }
    else if (dtor_list->count == FUNCS_PER_NODE)
    {
      TlsDtorNode *pnode = (TlsDtorNode *) malloc (sizeof (TlsDtorNode));
      if (pnode == NULL)
    return -1;
      pnode->count = 0;
      pnode->next = dtor_list;
      dtor_list = pnode;
 
      dtor_list->count = 0;
    }
  dtor_list->funcs[dtor_list->count++] = func;
#endif
  return 0;
}

_CRTALLOC() [3/3]

_CRTALLOC

(

".tls"

)

Definition at line 45 of file tlssup.c.

                                      {
  (ULONG_PTR) &_tls_start, (ULONG_PTR) &_tls_end,
  (ULONG_PTR) &_tls_index, (ULONG_PTR) (&__xl_a+1),
  (ULONG) 0, (ULONG) 0
};

Variable Documentation

__dyn_tls_init_callback

const PIMAGE_TLS_CALLBACK __dyn_tls_init_callback = (const PIMAGE_TLS_CALLBACK) __dyn_tls_init

This file has no copyright assigned and is placed in the Public Domain. This file is part of the w64 mingw-runtime package. No warranty is given; refer to the file DISCLAIMER.PD within this package.

Definition at line 107 of file tlssup.c.

_tls_index

ULONG _tls_index = 0

Definition at line 39 of file tlssup.c.

Referenced by _CRTALLOC().