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62 lines
1.4 KiB
62 lines
1.4 KiB
/*
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* Copyright 2002-2019 Intel Corporation.
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*
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* This software is provided to you as Sample Source Code as defined in the accompanying
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* End User License Agreement for the Intel(R) Software Development Products ("Agreement")
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* section 1.L.
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*
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* This software and the related documents are provided as is, with no express or implied
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* warranties, other than those that are expressly stated in the License.
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*/
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#include <stdio.h>
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#include <sys/types.h>
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#include <sys/wait.h>
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#include <unistd.h>
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#include <pthread.h>
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#include <sys/mman.h>
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#include <unistd.h>
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static void* ptr = NULL;
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void allocate_memory() __attribute__ ((noinline));
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void free_memory() __attribute__ ((noinline));
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void allocate_memory()
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{
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ptr = mmap(NULL, getpagesize(), PROT_READ, MAP_PRIVATE | MAP_ANON, -1 ,0);
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}
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void free_memory()
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{
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munmap(ptr, getpagesize());
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}
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int main()
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{
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allocate_memory();
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pid_t child_id = fork();
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if (child_id == 0)
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{
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printf("APPLICATION: After fork in child\n");
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}
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else
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{
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int status;
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free_memory();
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printf("APPLICATION: After fork in parent\n");
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waitpid(child_id, &status, 0);
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if (WIFEXITED(status))
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{
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status = WEXITSTATUS(status);
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}
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else if (WIFSIGNALED(status))
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{
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status = 128 + WTERMSIG(status);
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}
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return status;
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}
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return 0;
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}
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