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kAlloc.h
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1 
10 #include <kApi/kApiDef.h> //--inclusion order controlled by kApiDef
11 
12 #ifndef K_API_ALLOC_H
13 #define K_API_ALLOC_H
14 
15 #include <kApi/kAlloc.x.h>
16 
24 /*
25 * Public
26 */
27 
37 kInlineFx(kStatus) kAlloc_Get(kAlloc alloc, kSize size, void* mem)
38 {
39  return xkAlloc_VTable(alloc)->VGet(alloc, size, mem);
40 }
41 
51 kInlineFx(kStatus) kAlloc_GetZero(kAlloc alloc, kSize size, void* mem)
52 {
53  kCheck(kAlloc_Get(alloc, size, mem));
54 
55  kCheck(kMemSet(kPointer_ReadAs(mem, kPointer), 0, size));
56 
57  return kOK;
58 }
59 
69 kInlineFx(kStatus) kAlloc_GetObject(kAlloc alloc, kType type, void* mem)
70 {
72 
73  return kAlloc_Get(alloc, kType_InnerSize(type), mem);
74 }
75 
84 kInlineFx(kStatus) kAlloc_Free(kAlloc alloc, void* mem)
85 {
86  return xkAlloc_VTable(alloc)->VFree(alloc, mem);
87 }
88 
98 {
99  kCheck(kAlloc_Free(alloc, *(void**)mem));
100 
102 
103  return kOK;
104 }
105 
124 #if defined (K_CPP)
125 kInlineFx(kStatus) kAlloc_Copy(kAlloc destAlloc, void* dest, kAlloc srcAlloc, const void* src, kSize size, kObject context = kNULL)
126 {
127  kAlloc alloc = xkAlloc_SelectCopyAlloc(destAlloc, srcAlloc, context);
128 
129  return xkAlloc_VTable(alloc)->VCopy(alloc, destAlloc, dest, srcAlloc, src, size, context);
130 }
131 
132 #endif
133 
142 {
143  kObj(kAlloc, alloc);
144 
145  return obj->traits;
146 }
147 
156 {
157  kObj(kAlloc, alloc);
158 
159  return (obj->traits & (kALLOC_TRAIT_FOREIGN | kALLOC_TRAIT_SERIAL | kALLOC_TRAIT_NON_ATOMIC)) == 0;
160 }
161 
170 {
171  kObj(kAlloc, alloc);
172 
173  return (obj->traits & kALLOC_TRAIT_FOREIGN) != 0;
174 }
175 
186 {
187  return xkAlloc_Static()->appAlloc;
188 }
189 
202 {
203  return xkAlloc_Static()->systemAlloc;
204 }
205 
214 {
215  return kIsNull(alloc) ? kAlloc_App() : alloc;
216 }
217 
218 /*
219 * Protected
220 */
221 
233 kFx(kStatus) kAlloc_Init(kAlloc alloc, kType type, kAlloc allocator);
234 
243 kFx(kStatus) kAlloc_VRelease(kAlloc alloc);
244 
256 kInlineFx(kStatus) kAlloc_VGet(kAlloc alloc, kSize size, void* mem)
257 {
258  return kERROR_UNIMPLEMENTED;
259 }
260 
272 {
273  return kERROR_UNIMPLEMENTED;
274 }
275 
294 kInlineFx(kStatus) kAlloc_VCopy(kAlloc alloc, kAlloc destAlloc, void* dest, kAlloc srcAlloc, const void* src, kSize size, kObject context)
295 {
296  return kMemCopy(dest, src, size);
297 }
298 
299 #endif
kStatus kAlloc_VRelease(kAlloc alloc)
Protected virtual method that deallocates any resources owned by the object.
#define kALLOC_TRAIT_NON_ATOMIC
Allocates memory that cannot support atomic operations.
Definition: kApiDef.h:2037
#define kALLOC_TRAIT_SERIAL
Allocates memory suitable for single-threaded use only.
Definition: kApiDef.h:2036
#define kPointer_WriteAs(POINTER, VALUE, TYPE)
Deferences a pointer, assuming the specified type, and assigns a value to the resulting reference...
Definition: kApiDef.h:331
kAlloc kAlloc_Fallback(kAlloc alloc)
Returns the passed allocator, or if null, the App allocator.
Definition: kAlloc.h:213
kStatus kAlloc_Init(kAlloc alloc, kType type, kAlloc allocator)
Protected method called by derived classes to initialize the kAlloc base class.
Represents a void pointer.
#define kIsNull(POINTER)
Tests for equality with null pointer.
Definition: kApiDef.h:341
kAlloc kAlloc_App()
Gets the allocator that should normally be used by applications to request memory.
Definition: kAlloc.h:185
Represents an unsigned integer that can store a pointer address.
Abstract base class for memory allocator types.
kBool kAlloc_CanGetObject(kAlloc alloc)
Reports whether this allocator is suitable for allocating objects.
Definition: kAlloc.h:155
kStatus kAlloc_VCopy(kAlloc alloc, kAlloc destAlloc, void *dest, kAlloc srcAlloc, const void *src, kSize size, kObject context)
Protected virtual method that copies memory.
Definition: kAlloc.h:294
kStatus kAlloc_Free(kAlloc alloc, void *mem)
Frees a block of memory.
Definition: kAlloc.h:84
#define kCheck(EXPRESSION)
Executes a return statement if the given expression is not kOK.
Definition: kApiDef.h:561
kStatus kAlloc_GetObject(kAlloc alloc, kType type, void *mem)
Allocates a block of memory large enough for an object of the specified type.
Definition: kAlloc.h:69
kStatus kAlloc_Copy(kAlloc destAlloc, void *dest, kAlloc srcAlloc, const void *src, kSize size, kObject context=kNULL)
Copies memory allocated by one allocator to memory allocated with a different allocator.
Definition: kAlloc.h:125
#define kInlineFx(TYPE)
Inline method declaration helper.
Definition: kApiDef.h:26
kStatus kMemCopy(void *dest, const void *src, kSize size)
Copies memory from a source buffer to a non-overlapping destination.
kAlloc kAlloc_System()
Gets the system allocator.
Definition: kAlloc.h:201
#define kObj(TypeName_T, T_object)
Declares a local "obj" (this-pointer) variable and initializes it from a type-checked object handle...
Definition: kApiDef.h:3103
Core Zen type declarations.
kStatus kAlloc_VGet(kAlloc alloc, kSize size, void *mem)
Protected virtual method that allocates memory.
Definition: kAlloc.h:256
#define kCheckArgs(EXPRESSION)
Executes a return statement if the given expression is not kTRUE.
Definition: kApiDef.h:584
kStatus kAlloc_FreeRef(kAlloc alloc, void *mem)
Frees a block of memory and sets the memory pointer to kNULL.
Definition: kAlloc.h:97
kBool kAlloc_IsForeign(kAlloc alloc)
Reports whether memory will be allocated in a foreign address space.
Definition: kAlloc.h:169
#define kALLOC_TRAIT_FOREIGN
Allocates memory in a foreign memory domain (non-host address space).
Definition: kApiDef.h:2035
#define kERROR_UNIMPLEMENTED
Feature is not implemented.
Definition: kApiDef.h:494
Represents metadata about a type (class, interface, or value).
kAllocTrait kAlloc_Traits(kAlloc alloc)
Gets the traits associated with this allocator.
Definition: kAlloc.h:141
kSize kType_InnerSize(kType type)
Gets the internal size of a type.
Definition: kType.h:321
kStatus kAlloc_VFree(kAlloc alloc, void *mem)
Protected virtual method that frees memory.
Definition: kAlloc.h:271
Root of all Zen classes.
#define kOK
Operation successful.
Definition: kApiDef.h:515
Represents an error code.
#define kNULL
Null pointer.
Definition: kApiDef.h:269
#define kPointer_ReadAs(POINTER, TYPE)
Deferences a pointer, assuming the specified type, and returns the resulting value.
Definition: kApiDef.h:320
kStatus kAlloc_Get(kAlloc alloc, kSize size, void *mem)
Allocates a block of memory.
Definition: kAlloc.h:37
Represents a memory allocator trait.
Represents a boolean value.
kStatus kAlloc_GetZero(kAlloc alloc, kSize size, void *mem)
Allocates a block of memory and zero-initializes the block.
Definition: kAlloc.h:51
kStatus kMemSet(void *dest, kByte fill, kSize size)
Sets a block of memory to the given byte value.