d19d7d58aa
upgrade to NetBSD CVS release from 2012/10/17 12:00:00 UTC Makefiles updates to imporve portability Made sure to be consistent in the usage of braces/parenthesis at least on a per file basis. For variables, it is recommended to continue to use braces.
40 lines
1.4 KiB
C
40 lines
1.4 KiB
C
/* This header makes it possible to redefine system calls to the
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* file system. This way, minix servers can re-route the data
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* that libgcov tries to send to the file system. This is
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* necessary, because the servers can't access the file system
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* directly. Instead, they will copy the data to a helping user
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* space process, which will call the file system for them.
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* For more information, see the <minix/gcov.h> header file.
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*/
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#include <stdio.h>
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#include <unistd.h>
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#include <sys/types.h>
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/* These function pointers initially point to the standard system library
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* functions (fopen, etc). All calls to these system library functions are
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* then redefined to calls to these function pointers. Because the pointers
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* still point to the original functions, all functionality is unchanged.
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* Therefore, libgcov won't act differently when linked to applications.
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* But, when these pointers are redefined by code within the minix servers,
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* the file system calls get replaced by other functionality.
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*/
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#define fopen(...) _gcov_fopen(__VA_ARGS__)
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#define fread(...) _gcov_fread(__VA_ARGS__)
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#define fwrite(...) _gcov_fwrite(__VA_ARGS__)
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#define fclose(...) _gcov_fclose(__VA_ARGS__)
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#define fseek(...) _gcov_fseek(__VA_ARGS__)
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#define getenv(...) _gcov_getenv(__VA_ARGS__)
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/* wrapper to make it possible to disable gcov_exit on a process exit (for mfs) */
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int do_gcov_exit = 1;
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void gcov_exit_wrapper(void){
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if(do_gcov_exit)
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gcov_exit();
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}
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