cleanup_group.c

 
#include <winpr/config.h>
 
#include <winpr/winpr.h>
#include <winpr/crt.h>
#include <winpr/pool.h>
#include <winpr/library.h>
 
#include "pool.h"
 
#ifdef WINPR_THREAD_POOL
 
#ifdef _WIN32
static INIT_ONCE init_once_module = INIT_ONCE_STATIC_INIT;
static PTP_CLEANUP_GROUP(WINAPI* pCreateThreadpoolCleanupGroup)();
static VOID(WINAPI* pCloseThreadpoolCleanupGroupMembers)(PTP_CLEANUP_GROUP ptpcg,
                                                         BOOL fCancelPendingCallbacks,
                                                         PVOID pvCleanupContext);
static VOID(WINAPI* pCloseThreadpoolCleanupGroup)(PTP_CLEANUP_GROUP ptpcg);
 
static BOOL CALLBACK init_module(PINIT_ONCE once, PVOID param, PVOID* context)
{
  HMODULE kernel32 = LoadLibraryA("kernel32.dll");
 
  if (kernel32)
  {
    pCreateThreadpoolCleanupGroup =
        GetProcAddressAs(kernel32, "CreateThreadpoolCleanupGroup", void*);
    pCloseThreadpoolCleanupGroupMembers =
        GetProcAddressAs(kernel32, "CloseThreadpoolCleanupGroupMembers", void*);
    pCloseThreadpoolCleanupGroup =
        GetProcAddressAs(kernel32, "CloseThreadpoolCleanupGroup", void*);
  }
 
  return TRUE;
}
#endif
 
PTP_CLEANUP_GROUP winpr_CreateThreadpoolCleanupGroup(void)
{
  PTP_CLEANUP_GROUP cleanupGroup = nullptr;
#ifdef _WIN32
  if (!InitOnceExecuteOnce(&init_once_module, init_module, nullptr, nullptr))
    return nullptr;
 
  if (pCreateThreadpoolCleanupGroup)
    return pCreateThreadpoolCleanupGroup();
 
  return cleanupGroup;
#else
  cleanupGroup = (PTP_CLEANUP_GROUP)calloc(1, sizeof(TP_CLEANUP_GROUP));
 
  if (!cleanupGroup)
    return nullptr;
 
  cleanupGroup->groups = ArrayList_New(FALSE);
 
  if (!cleanupGroup->groups)
  {
    free(cleanupGroup);
    return nullptr;
  }
 
  return cleanupGroup;
#endif
}
 
VOID winpr_SetThreadpoolCallbackCleanupGroup(PTP_CALLBACK_ENVIRON pcbe, PTP_CLEANUP_GROUP ptpcg,
                                             PTP_CLEANUP_GROUP_CANCEL_CALLBACK pfng)
{
  pcbe->CleanupGroup = ptpcg;
  pcbe->CleanupGroupCancelCallback = pfng;
#ifndef _WIN32
  pcbe->CleanupGroup->env = pcbe;
#endif
}
 
VOID winpr_CloseThreadpoolCleanupGroupMembers(WINPR_ATTR_UNUSED PTP_CLEANUP_GROUP ptpcg,
                                              WINPR_ATTR_UNUSED BOOL fCancelPendingCallbacks,
                                              WINPR_ATTR_UNUSED PVOID pvCleanupContext)
{
#ifdef _WIN32
  if (!InitOnceExecuteOnce(&init_once_module, init_module, nullptr, nullptr))
    return;
 
  if (pCloseThreadpoolCleanupGroupMembers)
  {
    pCloseThreadpoolCleanupGroupMembers(ptpcg, fCancelPendingCallbacks, pvCleanupContext);
    return;
  }
 
#else
 
  while (ArrayList_Count(ptpcg->groups) > 0)
  {
    PTP_WORK work = ArrayList_GetItem(ptpcg->groups, 0);
    winpr_CloseThreadpoolWork(work);
  }
 
#endif
}
 
VOID winpr_CloseThreadpoolCleanupGroup(PTP_CLEANUP_GROUP ptpcg)
{
#ifdef _WIN32
  if (!InitOnceExecuteOnce(&init_once_module, init_module, nullptr, nullptr))
    return;
 
  if (pCloseThreadpoolCleanupGroup)
  {
    pCloseThreadpoolCleanupGroup(ptpcg);
    return;
  }
 
#else
 
  if (ptpcg && ptpcg->groups)
    ArrayList_Free(ptpcg->groups);
 
  if (ptpcg && ptpcg->env)
    ptpcg->env->CleanupGroup = nullptr;
 
  free(ptpcg);
#endif
}
 
#endif /* WINPR_THREAD_POOL defined */