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annotate dmd2/mem.h @ 1047:6bb04dbee21f

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Some calling convention work for x86-64: - Implement x86-64 extern(C), hopefully correctly. - Tried to be a bit smarter about extern(D) while I was there. Interestingly, this code seems to be generating more efficient code than gcc and llvm-gcc in some edge cases, like returning a `{ [7 x i8] }` loaded from a stack slot from an extern(C) function. (gcc generates 7 1-byte loads, while this code generates a 4-byte, a 2-byte and a 1-byte load) I also added some changes to make sure structs being returned from functions or passed in as parameters are stored in memory where the rest of the backend seems to expect them to be. These should be removed when support for first-class aggregates improves.
author Frits van Bommel <fvbommel wxs.nl>
date Fri, 06 Mar 2009 16:00:47 +0100
parents f04dde6e882c
children
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f04dde6e882c Added initial D2 support, D2 frontend and changes to codegen to make things compile.
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1 // Copyright (C) 2000-2001 by Chromium Communications
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2 // All Rights Reserved
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3
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4 #ifndef ROOT_MEM_H
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5 #define ROOT_MEM_H
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7 #include <stddef.h> // for size_t
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9 typedef void (*FINALIZERPROC)(void* pObj, void* pClientData);
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11 struct GC; // thread specific allocator
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13 struct Mem
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14 {
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15 GC *gc; // pointer to our thread specific allocator
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16 Mem() { gc = NULL; }
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18 void init();
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20 // Derive from Mem to get these storage allocators instead of global new/delete
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21 void * operator new(size_t m_size);
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22 void * operator new(size_t m_size, Mem *mem);
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23 void * operator new(size_t m_size, GC *gc);
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24 void operator delete(void *p);
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26 void * operator new[](size_t m_size);
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27 void operator delete[](void *p);
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29 char *strdup(const char *s);
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30 void *malloc(size_t size);
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31 void *malloc_uncollectable(size_t size);
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32 void *calloc(size_t size, size_t n);
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33 void *realloc(void *p, size_t size);
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34 void free(void *p);
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35 void free_uncollectable(void *p);
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36 void *mallocdup(void *o, size_t size);
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37 void error();
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38 void check(void *p); // validate pointer
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39 void fullcollect(); // do full garbage collection
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40 void fullcollectNoStack(); // do full garbage collection, no scan stack
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41 void mark(void *pointer);
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42 void addroots(char* pStart, char* pEnd);
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43 void removeroots(char* pStart);
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44 void setFinalizer(void* pObj, FINALIZERPROC pFn, void* pClientData);
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45 void setStackBottom(void *bottom);
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46 GC *getThreadGC(); // get apartment allocator for this thread
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47 };
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48
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49 extern Mem mem;
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51 #endif /* ROOT_MEM_H */