thread.c

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/*
 * Unit test suite for directory functions.
 *
 * Copyright 2002 Geoffrey Hausheer
 *
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 2.1 of the License, or (at your option) any later version.
 *
 * This library is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with this library; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 */

/* Define _WIN32_WINNT to get SetThreadIdealProcessor on Windows */
#define _WIN32_WINNT 0x0500

#include <stdarg.h>

#include "wine/test.h"
#include <windef.h>
#include <winbase.h>
#include <winnt.h>
#include <winerror.h>

/* Specify the number of simultaneous threads to test */
#define NUM_THREADS 4
/* Specify whether to test the extended priorities for Win2k/XP */
#define USE_EXTENDED_PRIORITIES 0
/* Specify whether to test the stack allocation in CreateThread */
#define CHECK_STACK 0

/* Set CHECK_STACK to 1 if you want to try to test the stack-limit from
   CreateThread.  So far I have been unable to make this work, and
   I am in doubt as to how portable it is.  Also, according to MSDN,
   you shouldn't mix C-run-time-libraries (i.e. alloca) with CreateThread.
   Anyhow, the check is currently commented out
*/
#if CHECK_STACK
# ifdef __try
#  define __TRY __try
#  define __EXCEPT __except
#  define __ENDTRY
# else
#  include "wine/exception.h"
# endif
#endif

typedef BOOL (WINAPI *GetThreadPriorityBoost_t)(HANDLE,PBOOL);
static GetThreadPriorityBoost_t pGetThreadPriorityBoost=NULL;

typedef HANDLE (WINAPI *OpenThread_t)(DWORD,BOOL,DWORD);
static OpenThread_t pOpenThread=NULL;

typedef DWORD (WINAPI *SetThreadIdealProcessor_t)(HANDLE,DWORD);
static SetThreadIdealProcessor_t pSetThreadIdealProcessor=NULL;

typedef BOOL (WINAPI *SetThreadPriorityBoost_t)(HANDLE,BOOL);
static SetThreadPriorityBoost_t pSetThreadPriorityBoost=NULL;

/* Functions not tested yet:
  AttachThreadInput
  CreateRemoteThread
  SetThreadContext
  SwitchToThread

In addition there are no checks that the inheritance works properly in
CreateThread
*/

DWORD tlsIndex;

typedef struct {
  int threadnum;
  HANDLE *event;
  DWORD *threadmem;
} t1Struct;

/* WinME supports OpenThread but doesn't know about access restrictions so
   we require them to be either completly ignored or always obeyed.
*/
INT obeying_ars = 0; /* -1 == no, 0 == dunno yet, 1 == yes */
#define obey_ar(x) \
  (obeying_ars == 0 \
    ? ((x) \
      ? (obeying_ars = +1) \
      : ((obeying_ars = -1), \
         trace("not restricted, assuming consistent behaviour\n"))) \
    : (obeying_ars < 0) \
      ? ok(!(x), "access restrictions obeyed\n") \
      : ok( (x), "access restrictions not obeyed\n"))

/* Basic test that simulatneous threads can access shared memory,
   that the thread local storage routines work correctly, and that
   threads actually run concurrently
*/
static DWORD WINAPI threadFunc1(LPVOID p)
{
    t1Struct *tstruct = (t1Struct *)p;
   int i;
/* write our thread # into shared memory */
   tstruct->threadmem[tstruct->threadnum]=GetCurrentThreadId();
   ok(TlsSetValue(tlsIndex,(LPVOID)(tstruct->threadnum+1))!=0,
      "TlsSetValue failed\n");
/* The threads synchronize before terminating.  This is done by
   Signaling an event, and waiting for all events to occur
*/
   SetEvent(tstruct->event[tstruct->threadnum]);
   WaitForMultipleObjects(NUM_THREADS,tstruct->event,TRUE,INFINITE);
/* Double check that all threads really did run by validating that
   they have all written to the shared memory. There should be no race
   here, since all threads were synchronized after the write.*/
   for(i=0;i<NUM_THREADS;i++) {
     while(tstruct->threadmem[i]==0) ;
   }
/* Check that noone cahnged our tls memory */
   ok((int)TlsGetValue(tlsIndex)-1==tstruct->threadnum,
      "TlsGetValue failed\n");
   return NUM_THREADS+tstruct->threadnum;
}

static DWORD WINAPI threadFunc2(LPVOID p)
{
   return 99;
}

static DWORD WINAPI threadFunc3(LPVOID p)
{
   HANDLE thread;
   thread=GetCurrentThread();
   SuspendThread(thread);
   return 99;
}

static DWORD WINAPI threadFunc4(LPVOID p)
{
    HANDLE event = (HANDLE)p;
   if(event != NULL) {
     SetEvent(event);
   }
   Sleep(99000);
   return 0;
}

#if CHECK_STACK
static DWORD WINAPI threadFunc5(LPVOID p)
{
  DWORD *exitCode = (DWORD *)p;
  SYSTEM_INFO sysInfo;
  sysInfo.dwPageSize=0;
  GetSystemInfo(&sysInfo);
  *exitCode=0;
   __TRY
   {
     alloca(2*sysInfo.dwPageSize);
   }
    __EXCEPT(1) {
     *exitCode=1;
   }
   __ENDTRY
   return 0;
}
#endif

/* Check basic funcationality of CreateThread and Tls* functions */
static VOID test_CreateThread_basic(void)
{
   HANDLE thread[NUM_THREADS],event[NUM_THREADS];
   DWORD threadid[NUM_THREADS],curthreadId;
   DWORD threadmem[NUM_THREADS];
   DWORD exitCode;
   t1Struct tstruct[NUM_THREADS];
   int error;
   DWORD i,j;
/* Retrieve current Thread ID for later comparisons */
  curthreadId=GetCurrentThreadId();
/* Allocate some local storage */
  ok((tlsIndex=TlsAlloc())!=TLS_OUT_OF_INDEXES,"TlsAlloc failed\n");
/* Create events for thread synchronization */
  for(i=0;i<NUM_THREADS;i++) {
    threadmem[i]=0;
/* Note that it doesn't matter what type of event we chose here.  This
   test isn't trying to thoroughly test events
*/
    event[i]=CreateEventA(NULL,TRUE,FALSE,NULL);
    tstruct[i].threadnum=i;
    tstruct[i].threadmem=threadmem;
    tstruct[i].event=event;
  }

/* Test that passing arguments to threads works okay */
  for(i=0;i<NUM_THREADS;i++) {
    thread[i] = CreateThread(NULL,0,threadFunc1,
                             &tstruct[i],0,&threadid[i]);
    ok(thread[i]!=NULL,"Create Thread failed\n");
  }
/* Test that the threads actually complete */
  for(i=0;i<NUM_THREADS;i++) {
    error=WaitForSingleObject(thread[i],5000);
    ok(error==WAIT_OBJECT_0, "Thread did not complete within timelimit\n");
    if(error!=WAIT_OBJECT_0) {
      TerminateThread(thread[i],i+NUM_THREADS);
    }
    ok(GetExitCodeThread(thread[i],&exitCode),"Could not retrieve ext code\n");
    ok(exitCode==i+NUM_THREADS,"Thread returned an incorrect exit code\n");
  }
/* Test that each thread executed in its parent's address space
   (it was able to change threadmem and pass that change back to its parent)
   and that each thread id was independant).  Note that we prove that the
   threads actually execute concurrently by having them block on each other
   in threadFunc1
*/
  for(i=0;i<NUM_THREADS;i++) {
    error=0;
    for(j=i+1;j<NUM_THREADS;j++) {
      if (threadmem[i]==threadmem[j]) {
        error=1;
      }
    }
    ok(!error && threadmem[i]==threadid[i] && threadmem[i]!=curthreadId,
         "Thread did not execute successfully\n");
    ok(CloseHandle(thread[i])!=0,"CloseHandle failed\n");
  }
  ok(TlsFree(tlsIndex)!=0,"TlsFree failed\n");
}

/* Check that using the CREATE_SUSPENDED flag works */
static VOID test_CreateThread_suspended(void)
{
  HANDLE thread;
  DWORD threadId;
  int error;

  thread = CreateThread(NULL,0,threadFunc2,NULL,
                        CREATE_SUSPENDED,&threadId);
  ok(thread!=NULL,"Create Thread failed\n");
/* Check that the thread is suspended */
  ok(SuspendThread(thread)==1,"Thread did not start suspended\n");
  ok(ResumeThread(thread)==2,"Resume thread returned an invalid value\n");
/* Check that resume thread didn't actually start the thread.  I can't think
   of a better way of checking this than just waiting.  I am not sure if this
   will work on slow computers.
*/
  ok(WaitForSingleObject(thread,1000)==WAIT_TIMEOUT,
     "ResumeThread should not have actually started the thread\n");
/* Now actually resume the thread and make sure that it actually completes*/
  ok(ResumeThread(thread)==1,"Resume thread returned an invalid value\n");
  ok((error=WaitForSingleObject(thread,1000))==WAIT_OBJECT_0,
     "Thread did not resume\n");
  if(error!=WAIT_OBJECT_0) {
    TerminateThread(thread,1);
  }
  ok(CloseHandle(thread)!=0,"CloseHandle failed\n");
}

/* Check that SuspendThread and ResumeThread work */
static VOID test_SuspendThread(void)
{
  HANDLE thread,access_thread;
  DWORD threadId,exitCode,error;
  int i;

  thread = CreateThread(NULL,0,threadFunc3,NULL,
                        0,&threadId);
  ok(thread!=NULL,"Create Thread failed\n");
/* Check that the thread is suspended */
/* Note that this is a polling method, and there is a race between
   SuspendThread being called (in the child, and the loop below timing out,
   so the test could fail on a heavily loaded or slow computer.
*/
  error=0;
  for(i=0;error==0 && i<100;i++) {
    error=SuspendThread(thread);
    ResumeThread(thread);
    if(error==0) {
      Sleep(50);
      i++;
    }
  }
  ok(error==1,"SuspendThread did not work\n");
/* check that access restrictions are obeyed */
  if (pOpenThread) {
    access_thread=pOpenThread(THREAD_ALL_ACCESS & (~THREAD_SUSPEND_RESUME),
                           0,threadId);
    ok(access_thread!=NULL,"OpenThread returned an invalid handle\n");
    if (access_thread!=NULL) {
      obey_ar(SuspendThread(access_thread)==~0UL);
      obey_ar(ResumeThread(access_thread)==~0UL);
      ok(CloseHandle(access_thread)!=0,"CloseHandle Failed\n");
    }