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92 lines
4.0 KiB
C
92 lines
4.0 KiB
C
/*
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MacOS_Test_config.h
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Configuration flags for Macintosh development systems.
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Test version.
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<Revision History>
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11/16/95 pcb Updated compilation flags to reflect latest 4.6 Makefile.
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by Patrick C. Beard.
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*/
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/* Boehm, November 17, 1995 12:05 pm PST */
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#ifdef __MWERKS__
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// for CodeWarrior Pro with Metrowerks Standard Library (MSL).
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// #define MSL_USE_PRECOMPILED_HEADERS 0
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#include <ansi_prefix.mac.h>
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#ifndef __STDC__
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#define __STDC__ 0
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#endif
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#endif
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// these are defined again in gc_priv.h.
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#undef TRUE
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#undef FALSE
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#define ALL_INTERIOR_POINTERS // follows interior pointers.
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//#define SILENT // want collection messages.
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//#define DONT_ADD_BYTE_AT_END // no padding.
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//#define SMALL_CONFIG // whether to a smaller heap.
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#define NO_SIGNALS // signals aren't real on the Macintosh.
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#define USE_TEMPORARY_MEMORY // use Macintosh temporary memory.
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// CFLAGS= -O -DNO_SIGNALS -DALL_INTERIOR_POINTERS -DSILENT
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//
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//LIBGC_CFLAGS= -O -DNO_SIGNALS -DSILENT \
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// -DREDIRECT_MALLOC=GC_malloc_uncollectable \
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// -DDONT_ADD_BYTE_AT_END -DALL_INTERIOR_POINTERS
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// Flags for building libgc.a -- the last two are required.
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//
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// Setjmp_test may yield overly optimistic results when compiled
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// without optimization.
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// -DSILENT disables statistics printing, and improves performance.
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// -DCHECKSUMS reports on erroneously clear dirty bits, and unexpectedly
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// altered stubborn objects, at substantial performance cost.
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// Use only for incremental collector debugging.
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// -DFIND_LEAK causes the collector to assume that all inaccessible
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// objects should have been explicitly deallocated, and reports exceptions.
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// Finalization and the test program are not usable in this mode.
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// -DSOLARIS_THREADS enables support for Solaris (thr_) threads.
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// (Clients should also define SOLARIS_THREADS and then include
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// gc.h before performing thr_ or GC_ operations.)
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// This is broken on nonSPARC machines.
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// -DALL_INTERIOR_POINTERS allows all pointers to the interior
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// of objects to be recognized. (See gc_priv.h for consequences.)
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// -DSMALL_CONFIG tries to tune the collector for small heap sizes,
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// usually causing it to use less space in such situations.
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// Incremental collection no longer works in this case.
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// -DLARGE_CONFIG tunes the collector for unusually large heaps.
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// Necessary for heaps larger than about 500 MB on most machines.
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// Recommended for heaps larger than about 64 MB.
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// -DDONT_ADD_BYTE_AT_END is meaningful only with
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// -DALL_INTERIOR_POINTERS. Normally -DALL_INTERIOR_POINTERS
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// causes all objects to be padded so that pointers just past the end of
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// an object can be recognized. This can be expensive. (The padding
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// is normally more than one byte due to alignment constraints.)
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// -DDONT_ADD_BYTE_AT_END disables the padding.
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// -DNO_SIGNALS does not disable signals during critical parts of
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// the GC process. This is no less correct than many malloc
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// implementations, and it sometimes has a significant performance
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// impact. However, it is dangerous for many not-quite-ANSI C
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// programs that call things like printf in asynchronous signal handlers.
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// -DGC_OPERATOR_NEW_ARRAY declares that the C++ compiler supports the
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// new syntax "operator new[]" for allocating and deleting arrays.
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// See gc_cpp.h for details. No effect on the C part of the collector.
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// This is defined implicitly in a few environments.
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// -DREDIRECT_MALLOC=X causes malloc, realloc, and free to be defined
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// as aliases for X, GC_realloc, and GC_free, respectively.
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// Calloc is redefined in terms of the new malloc. X should
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// be either GC_malloc or GC_malloc_uncollectable.
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// The former is occasionally useful for working around leaks in code
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// you don't want to (or can't) look at. It may not work for
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// existing code, but it often does. Neither works on all platforms,
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// since some ports use malloc or calloc to obtain system memory.
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// (Probably works for UNIX, and win32.)
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// -DNO_DEBUG removes GC_dump and the debugging routines it calls.
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// Reduces code size slightly at the expense of debuggability.
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