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112 lines
3.0 KiB
112 lines
3.0 KiB
/**
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@file
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@ingroup util
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@brief Access to datasize limit.
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@copyright@parblock
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Copyright (c) 1995-2015, Regents of the University of Colorado
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All rights reserved.
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Redistribution and use in source and binary forms, with or without
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modification, are permitted provided that the following conditions
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are met:
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Redistributions of source code must retain the above copyright
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notice, this list of conditions and the following disclaimer.
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Redistributions in binary form must reproduce the above copyright
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notice, this list of conditions and the following disclaimer in the
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documentation and/or other materials provided with the distribution.
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Neither the name of the University of Colorado nor the names of its
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contributors may be used to endorse or promote products derived from
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this software without specific prior written permission.
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THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
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FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
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COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
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INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
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BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
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CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
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ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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POSSIBILITY OF SUCH DAMAGE.
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@endparblock
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*/
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#include "config.h"
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#if HAVE_STDINT_H == 1
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#include <stdint.h>
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#endif
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#if HAVE_STDDEF_H == 1
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#include <stddef.h>
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#endif
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#if HAVE_SYS_RESOURCE_H == 1
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#if HAVE_SYS_TIME_H == 1
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#include <sys/time.h>
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#endif
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#include <sys/resource.h>
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#endif
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#ifdef _WIN32
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#include <windows.h>
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#endif
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/**
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* @brief Default value returned if getrlimit not available.
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*/
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#ifndef RLIMIT_DATA_DEFAULT
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#define RLIMIT_DATA_DEFAULT 268435456 /* assume 256MB by default */
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#endif
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/**
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* @def EXTERN
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* @brief Allows C linkage when compiling as C++.
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*/
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#ifndef EXTERN
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# ifdef __cplusplus
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# define EXTERN extern "C"
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# else
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# define EXTERN extern
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# endif
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#endif
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EXTERN size_t getSoftDataLimit(void);
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/**
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* @brief Gets the soft datasize limit.
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*/
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size_t
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getSoftDataLimit(void)
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{
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#if HAVE_SYS_RESOURCE_H == 1 && HAVE_GETRLIMIT == 1 && defined(RLIMIT_DATA)
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struct rlimit rl;
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int result;
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result = getrlimit(RLIMIT_DATA, &rl);
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if (result != 0 || rl.rlim_cur == RLIM_INFINITY)
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return (size_t) RLIMIT_DATA_DEFAULT;
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else
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return (size_t) rl.rlim_cur;
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#elif defined(_WIN32)
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/* Not quite the same, because this returns available physical memory. */
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MEMORYSTATUSEX statex;
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statex.dwLength = sizeof(statex);
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if (GlobalMemoryStatusEx(&statex))
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return (size_t) statex.ullTotalPhys;
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else
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return (size_t) RLIMIT_DATA_DEFAULT;
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#else
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return (size_t) RLIMIT_DATA_DEFAULT;
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#endif
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} /* end of getSoftDataLimit */
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