native/breakgen/AppMain.c

   1 /*
   2  * Copyright 2000-2009 JetBrains s.r.o.
   3  *
   4  * Licensed under the Apache License, Version 2.0 (the "License");
   5  * you may not use this file except in compliance with the License.
   6  * You may obtain a copy of the License at
   7  *
   8  * http://www.apache.org/licenses/LICENSE-2.0
   9  *
  10  * Unless required by applicable law or agreed to in writing, software
  11  * distributed under the License is distributed on an "AS IS" BASIS,
  12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  13  * See the License for the specific language governing permissions and
  14  * limitations under the License.
  15  */
  16
  17 #include <jni.h>
  18 #if defined(WIN32)
  19 #include <windows.h>
  20 #else
  21 #include <signal.h>
  22 #include <unistd.h>
  23 #include <stdlib.h>
  24 #include <stdio.h>
  25 #include <string.h>
  26
  27 int isKernel26OrHigher();
  28 #endif
  29
  30 JNIEXPORT void JNICALL Java_com_intellij_rt_execution_application_AppMain_triggerControlBreak
  31   (JNIEnv *env, jclass clazz) {
  32 #if defined(WIN32)
  33   GenerateConsoleCtrlEvent(CTRL_BREAK_EVENT, 0);
  34 #else
  35   if (isKernel26OrHigher()) {
  36     kill (getpid(), SIGQUIT);
  37   } else {
  38     int ppid = getppid();
  39     char buffer[1024];
  40     sprintf(buffer, "/proc/%d/status", ppid);
  41     FILE * fp;
  42     if ( (fp = fopen(buffer, "r")) != NULL )
  43     {
  44       char s[124];
  45       char * ppid_name = "PPid:";
  46       while (fscanf (fp, "%s\n", s) > 0) {
  47         if (strcmp(s, ppid_name) == 0) {
  48           int pppid;
  49           fscanf(fp, "%d", &pppid);
  50           kill (pppid, SIGQUIT);
  51           break;
  52         }
  53       }
  54
  55       fclose (fp);
  56     }
  57   }
  58 #endif
  59 }
  60
  61 #ifndef WIN32
  62
  63 int isKernel26OrHigher() {
  64   char buffer[1024];
  65   FILE * fp;
  66   if ( (fp = fopen("/proc/version", "r")) != NULL )
  67   {
  68      int major;
  69      int minor;
  70      fscanf(fp, "Linux version %d.%d", &major, &minor);
  71      fclose (fp);
  72      if (major < 2) return 0;
  73      if (major == 2) return minor >= 6;
  74      return 1;
  75   }
  76
  77   return 0;
  78 }
  79 #endif