Daily bump.
[official-gcc.git] / boehm-gc / Mac_files / MacOS_Test_config.h
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1 /*
2 MacOS_Test_config.h
4 Configuration flags for Macintosh development systems.
6 Test version.
8 <Revision History>
10 11/16/95 pcb Updated compilation flags to reflect latest 4.6 Makefile.
12 by Patrick C. Beard.
14 /* Boehm, November 17, 1995 12:05 pm PST */
16 #ifdef __MWERKS__
18 // for CodeWarrior Pro with Metrowerks Standard Library (MSL).
19 // #define MSL_USE_PRECOMPILED_HEADERS 0
20 #include <ansi_prefix.mac.h>
21 #ifndef __STDC__
22 #define __STDC__ 0
23 #endif
25 #endif
27 // these are defined again in gc_priv.h.
28 #undef TRUE
29 #undef FALSE
31 #define ALL_INTERIOR_POINTERS // follows interior pointers.
32 //#define SILENT // want collection messages.
33 //#define DONT_ADD_BYTE_AT_END // no padding.
34 //#define SMALL_CONFIG // whether to a smaller heap.
35 #define NO_SIGNALS // signals aren't real on the Macintosh.
36 #define USE_TEMPORARY_MEMORY // use Macintosh temporary memory.
38 // CFLAGS= -O -DNO_SIGNALS -DALL_INTERIOR_POINTERS -DSILENT
40 //LIBGC_CFLAGS= -O -DNO_SIGNALS -DSILENT \
41 // -DREDIRECT_MALLOC=GC_malloc_uncollectable \
42 // -DDONT_ADD_BYTE_AT_END -DALL_INTERIOR_POINTERS
43 // Flags for building libgc.a -- the last two are required.
45 // Setjmp_test may yield overly optimistic results when compiled
46 // without optimization.
47 // -DSILENT disables statistics printing, and improves performance.
48 // -DCHECKSUMS reports on erroneously clear dirty bits, and unexpectedly
49 // altered stubborn objects, at substantial performance cost.
50 // Use only for incremental collector debugging.
51 // -DFIND_LEAK causes the collector to assume that all inaccessible
52 // objects should have been explicitly deallocated, and reports exceptions.
53 // Finalization and the test program are not usable in this mode.
54 // -DSOLARIS_THREADS enables support for Solaris (thr_) threads.
55 // (Clients should also define SOLARIS_THREADS and then include
56 // gc.h before performing thr_ or GC_ operations.)
57 // This is broken on nonSPARC machines.
58 // -DALL_INTERIOR_POINTERS allows all pointers to the interior
59 // of objects to be recognized. (See gc_priv.h for consequences.)
60 // -DSMALL_CONFIG tries to tune the collector for small heap sizes,
61 // usually causing it to use less space in such situations.
62 // Incremental collection no longer works in this case.
63 // -DLARGE_CONFIG tunes the collector for unusually large heaps.
64 // Necessary for heaps larger than about 500 MB on most machines.
65 // Recommended for heaps larger than about 64 MB.
66 // -DDONT_ADD_BYTE_AT_END is meaningful only with
67 // -DALL_INTERIOR_POINTERS. Normally -DALL_INTERIOR_POINTERS
68 // causes all objects to be padded so that pointers just past the end of
69 // an object can be recognized. This can be expensive. (The padding
70 // is normally more than one byte due to alignment constraints.)
71 // -DDONT_ADD_BYTE_AT_END disables the padding.
72 // -DNO_SIGNALS does not disable signals during critical parts of
73 // the GC process. This is no less correct than many malloc
74 // implementations, and it sometimes has a significant performance
75 // impact. However, it is dangerous for many not-quite-ANSI C
76 // programs that call things like printf in asynchronous signal handlers.
77 // -DGC_OPERATOR_NEW_ARRAY declares that the C++ compiler supports the
78 // new syntax "operator new[]" for allocating and deleting arrays.
79 // See gc_cpp.h for details. No effect on the C part of the collector.
80 // This is defined implicitly in a few environments.
81 // -DREDIRECT_MALLOC=X causes malloc, realloc, and free to be defined
82 // as aliases for X, GC_realloc, and GC_free, respectively.
83 // Calloc is redefined in terms of the new malloc. X should
84 // be either GC_malloc or GC_malloc_uncollectable.
85 // The former is occasionally useful for working around leaks in code
86 // you don't want to (or can't) look at. It may not work for
87 // existing code, but it often does. Neither works on all platforms,
88 // since some ports use malloc or calloc to obtain system memory.
89 // (Probably works for UNIX, and win32.)
90 // -DNO_DEBUG removes GC_dump and the debugging routines it calls.
91 // Reduces code size slightly at the expense of debuggability.