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fb3df220 | 1 | /** @file\r |
50a64e5b | 2 | Provides services to allocate and free memory buffers of various memory types and alignments.\r |
9095d37b LG |
3 | \r |
4 | The Memory Allocation Library abstracts various common memory allocation operations. This library\r | |
5 | allows code to be written in a phase-independent manner because the allocation of memory in PEI, DXE,\r | |
6 | and SMM (for example) is done via a different mechanism. Using a common library interface makes it\r | |
7 | much easier to port algorithms from phase to phase.\r | |
8 | \r | |
9 | Copyright (c) 2006 - 2018, Intel Corporation. All rights reserved.<BR>\r | |
9df063a0 | 10 | This program and the accompanying materials\r |
50a64e5b | 11 | are licensed and made available under the terms and conditions of the BSD License\r |
12 | which accompanies this distribution. The full text of the license may be found at\r | |
13 | http://opensource.org/licenses/bsd-license.php\r | |
fb3df220 | 14 | \r |
50a64e5b | 15 | THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,\r |
16 | WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.\r | |
fb3df220 | 17 | \r |
fb3df220 | 18 | **/\r |
19 | \r | |
20 | #ifndef __MEMORY_ALLOCATION_LIB_H__\r | |
21 | #define __MEMORY_ALLOCATION_LIB_H__\r | |
22 | \r | |
23 | /**\r | |
24 | Allocates one or more 4KB pages of type EfiBootServicesData.\r | |
25 | \r | |
26 | Allocates the number of 4KB pages of type EfiBootServicesData and returns a pointer to the\r | |
27 | allocated buffer. The buffer returned is aligned on a 4KB boundary. If Pages is 0, then NULL\r | |
28 | is returned. If there is not enough memory remaining to satisfy the request, then NULL is\r | |
29 | returned.\r | |
30 | \r | |
31 | @param Pages The number of 4 KB pages to allocate.\r | |
32 | \r | |
33 | @return A pointer to the allocated buffer or NULL if allocation fails.\r | |
34 | \r | |
35 | **/\r | |
36 | VOID *\r | |
37 | EFIAPI\r | |
38 | AllocatePages (\r | |
39 | IN UINTN Pages\r | |
40 | );\r | |
41 | \r | |
42 | /**\r | |
43 | Allocates one or more 4KB pages of type EfiRuntimeServicesData.\r | |
44 | \r | |
45 | Allocates the number of 4KB pages of type EfiRuntimeServicesData and returns a pointer to the\r | |
46 | allocated buffer. The buffer returned is aligned on a 4KB boundary. If Pages is 0, then NULL\r | |
47 | is returned. If there is not enough memory remaining to satisfy the request, then NULL is\r | |
48 | returned.\r | |
49 | \r | |
50 | @param Pages The number of 4 KB pages to allocate.\r | |
51 | \r | |
52 | @return A pointer to the allocated buffer or NULL if allocation fails.\r | |
53 | \r | |
54 | **/\r | |
55 | VOID *\r | |
56 | EFIAPI\r | |
57 | AllocateRuntimePages (\r | |
58 | IN UINTN Pages\r | |
59 | );\r | |
60 | \r | |
61 | /**\r | |
62 | Allocates one or more 4KB pages of type EfiReservedMemoryType.\r | |
63 | \r | |
64 | Allocates the number of 4KB pages of type EfiReservedMemoryType and returns a pointer to the\r | |
65 | allocated buffer. The buffer returned is aligned on a 4KB boundary. If Pages is 0, then NULL\r | |
66 | is returned. If there is not enough memory remaining to satisfy the request, then NULL is\r | |
67 | returned.\r | |
68 | \r | |
69 | @param Pages The number of 4 KB pages to allocate.\r | |
70 | \r | |
71 | @return A pointer to the allocated buffer or NULL if allocation fails.\r | |
72 | \r | |
73 | **/\r | |
74 | VOID *\r | |
75 | EFIAPI\r | |
76 | AllocateReservedPages (\r | |
77 | IN UINTN Pages\r | |
78 | );\r | |
79 | \r | |
80 | /**\r | |
81 | Frees one or more 4KB pages that were previously allocated with one of the page allocation\r | |
82 | functions in the Memory Allocation Library.\r | |
83 | \r | |
84 | Frees the number of 4KB pages specified by Pages from the buffer specified by Buffer. Buffer\r | |
85 | must have been allocated on a previous call to the page allocation services of the Memory\r | |
6e10b70a | 86 | Allocation Library. If it is not possible to free allocated pages, then this function will\r |
446b94b0 | 87 | perform no actions.\r |
9095d37b | 88 | \r |
fb3df220 | 89 | If Buffer was not allocated with a page allocation function in the Memory Allocation Library,\r |
90 | then ASSERT().\r | |
91 | If Pages is zero, then ASSERT().\r | |
9095d37b | 92 | \r |
fb3df220 | 93 | @param Buffer Pointer to the buffer of pages to free.\r |
94 | @param Pages The number of 4 KB pages to free.\r | |
95 | \r | |
96 | **/\r | |
97 | VOID\r | |
98 | EFIAPI\r | |
99 | FreePages (\r | |
100 | IN VOID *Buffer,\r | |
101 | IN UINTN Pages\r | |
102 | );\r | |
103 | \r | |
104 | /**\r | |
105 | Allocates one or more 4KB pages of type EfiBootServicesData at a specified alignment.\r | |
106 | \r | |
107 | Allocates the number of 4KB pages specified by Pages of type EfiBootServicesData with an\r | |
108 | alignment specified by Alignment. The allocated buffer is returned. If Pages is 0, then NULL is\r | |
109 | returned. If there is not enough memory at the specified alignment remaining to satisfy the\r | |
110 | request, then NULL is returned.\r | |
9095d37b | 111 | \r |
fb3df220 | 112 | If Alignment is not a power of two and Alignment is not zero, then ASSERT().\r |
1346352d | 113 | If Pages plus EFI_SIZE_TO_PAGES (Alignment) overflows, then ASSERT().\r |
fb3df220 | 114 | \r |
115 | @param Pages The number of 4 KB pages to allocate.\r | |
116 | @param Alignment The requested alignment of the allocation. Must be a power of two.\r | |
117 | If Alignment is zero, then byte alignment is used.\r | |
118 | \r | |
119 | @return A pointer to the allocated buffer or NULL if allocation fails.\r | |
120 | \r | |
121 | **/\r | |
122 | VOID *\r | |
123 | EFIAPI\r | |
124 | AllocateAlignedPages (\r | |
125 | IN UINTN Pages,\r | |
126 | IN UINTN Alignment\r | |
127 | );\r | |
128 | \r | |
129 | /**\r | |
130 | Allocates one or more 4KB pages of type EfiRuntimeServicesData at a specified alignment.\r | |
131 | \r | |
132 | Allocates the number of 4KB pages specified by Pages of type EfiRuntimeServicesData with an\r | |
133 | alignment specified by Alignment. The allocated buffer is returned. If Pages is 0, then NULL is\r | |
134 | returned. If there is not enough memory at the specified alignment remaining to satisfy the\r | |
135 | request, then NULL is returned.\r | |
9095d37b | 136 | \r |
fb3df220 | 137 | If Alignment is not a power of two and Alignment is not zero, then ASSERT().\r |
1346352d | 138 | If Pages plus EFI_SIZE_TO_PAGES (Alignment) overflows, then ASSERT().\r |
fb3df220 | 139 | \r |
140 | @param Pages The number of 4 KB pages to allocate.\r | |
141 | @param Alignment The requested alignment of the allocation. Must be a power of two.\r | |
142 | If Alignment is zero, then byte alignment is used.\r | |
143 | \r | |
144 | @return A pointer to the allocated buffer or NULL if allocation fails.\r | |
145 | \r | |
146 | **/\r | |
147 | VOID *\r | |
148 | EFIAPI\r | |
149 | AllocateAlignedRuntimePages (\r | |
150 | IN UINTN Pages,\r | |
151 | IN UINTN Alignment\r | |
152 | );\r | |
153 | \r | |
154 | /**\r | |
155 | Allocates one or more 4KB pages of type EfiReservedMemoryType at a specified alignment.\r | |
156 | \r | |
157 | Allocates the number of 4KB pages specified by Pages of type EfiReservedMemoryType with an\r | |
158 | alignment specified by Alignment. The allocated buffer is returned. If Pages is 0, then NULL is\r | |
159 | returned. If there is not enough memory at the specified alignment remaining to satisfy the\r | |
160 | request, then NULL is returned.\r | |
9095d37b | 161 | \r |
fb3df220 | 162 | If Alignment is not a power of two and Alignment is not zero, then ASSERT().\r |
1346352d | 163 | If Pages plus EFI_SIZE_TO_PAGES (Alignment) overflows, then ASSERT().\r |
fb3df220 | 164 | \r |
165 | @param Pages The number of 4 KB pages to allocate.\r | |
166 | @param Alignment The requested alignment of the allocation. Must be a power of two.\r | |
167 | If Alignment is zero, then byte alignment is used.\r | |
168 | \r | |
169 | @return A pointer to the allocated buffer or NULL if allocation fails.\r | |
170 | \r | |
171 | **/\r | |
172 | VOID *\r | |
173 | EFIAPI\r | |
174 | AllocateAlignedReservedPages (\r | |
175 | IN UINTN Pages,\r | |
176 | IN UINTN Alignment\r | |
177 | );\r | |
178 | \r | |
179 | /**\r | |
180 | Frees one or more 4KB pages that were previously allocated with one of the aligned page\r | |
181 | allocation functions in the Memory Allocation Library.\r | |
182 | \r | |
183 | Frees the number of 4KB pages specified by Pages from the buffer specified by Buffer. Buffer\r | |
184 | must have been allocated on a previous call to the aligned page allocation services of the Memory\r | |
9095d37b | 185 | Allocation Library. If it is not possible to free allocated pages, then this function will\r |
446b94b0 | 186 | perform no actions.\r |
9095d37b | 187 | \r |
fb3df220 | 188 | If Buffer was not allocated with an aligned page allocation function in the Memory Allocation\r |
189 | Library, then ASSERT().\r | |
190 | If Pages is zero, then ASSERT().\r | |
9095d37b | 191 | \r |
fb3df220 | 192 | @param Buffer Pointer to the buffer of pages to free.\r |
193 | @param Pages The number of 4 KB pages to free.\r | |
194 | \r | |
195 | **/\r | |
196 | VOID\r | |
197 | EFIAPI\r | |
198 | FreeAlignedPages (\r | |
199 | IN VOID *Buffer,\r | |
200 | IN UINTN Pages\r | |
201 | );\r | |
202 | \r | |
203 | /**\r | |
204 | Allocates a buffer of type EfiBootServicesData.\r | |
205 | \r | |
206 | Allocates the number bytes specified by AllocationSize of type EfiBootServicesData and returns a\r | |
207 | pointer to the allocated buffer. If AllocationSize is 0, then a valid buffer of 0 size is\r | |
208 | returned. If there is not enough memory remaining to satisfy the request, then NULL is returned.\r | |
209 | \r | |
210 | @param AllocationSize The number of bytes to allocate.\r | |
211 | \r | |
212 | @return A pointer to the allocated buffer or NULL if allocation fails.\r | |
213 | \r | |
214 | **/\r | |
215 | VOID *\r | |
216 | EFIAPI\r | |
217 | AllocatePool (\r | |
218 | IN UINTN AllocationSize\r | |
219 | );\r | |
220 | \r | |
221 | /**\r | |
222 | Allocates a buffer of type EfiRuntimeServicesData.\r | |
223 | \r | |
224 | Allocates the number bytes specified by AllocationSize of type EfiRuntimeServicesData and returns\r | |
225 | a pointer to the allocated buffer. If AllocationSize is 0, then a valid buffer of 0 size is\r | |
226 | returned. If there is not enough memory remaining to satisfy the request, then NULL is returned.\r | |
227 | \r | |
228 | @param AllocationSize The number of bytes to allocate.\r | |
229 | \r | |
230 | @return A pointer to the allocated buffer or NULL if allocation fails.\r | |
231 | \r | |
232 | **/\r | |
233 | VOID *\r | |
234 | EFIAPI\r | |
235 | AllocateRuntimePool (\r | |
236 | IN UINTN AllocationSize\r | |
237 | );\r | |
238 | \r | |
239 | /**\r | |
8789c5e0 | 240 | Allocates a buffer of type EfiReservedMemoryType.\r |
fb3df220 | 241 | \r |
8789c5e0 | 242 | Allocates the number bytes specified by AllocationSize of type EfiReservedMemoryType and returns\r |
fb3df220 | 243 | a pointer to the allocated buffer. If AllocationSize is 0, then a valid buffer of 0 size is\r |
244 | returned. If there is not enough memory remaining to satisfy the request, then NULL is returned.\r | |
245 | \r | |
246 | @param AllocationSize The number of bytes to allocate.\r | |
247 | \r | |
248 | @return A pointer to the allocated buffer or NULL if allocation fails.\r | |
249 | \r | |
250 | **/\r | |
251 | VOID *\r | |
252 | EFIAPI\r | |
253 | AllocateReservedPool (\r | |
254 | IN UINTN AllocationSize\r | |
255 | );\r | |
256 | \r | |
257 | /**\r | |
258 | Allocates and zeros a buffer of type EfiBootServicesData.\r | |
259 | \r | |
260 | Allocates the number bytes specified by AllocationSize of type EfiBootServicesData, clears the\r | |
261 | buffer with zeros, and returns a pointer to the allocated buffer. If AllocationSize is 0, then a\r | |
262 | valid buffer of 0 size is returned. If there is not enough memory remaining to satisfy the\r | |
263 | request, then NULL is returned.\r | |
264 | \r | |
265 | @param AllocationSize The number of bytes to allocate and zero.\r | |
266 | \r | |
267 | @return A pointer to the allocated buffer or NULL if allocation fails.\r | |
268 | \r | |
269 | **/\r | |
270 | VOID *\r | |
271 | EFIAPI\r | |
272 | AllocateZeroPool (\r | |
273 | IN UINTN AllocationSize\r | |
274 | );\r | |
275 | \r | |
276 | /**\r | |
277 | Allocates and zeros a buffer of type EfiRuntimeServicesData.\r | |
278 | \r | |
279 | Allocates the number bytes specified by AllocationSize of type EfiRuntimeServicesData, clears the\r | |
280 | buffer with zeros, and returns a pointer to the allocated buffer. If AllocationSize is 0, then a\r | |
281 | valid buffer of 0 size is returned. If there is not enough memory remaining to satisfy the\r | |
282 | request, then NULL is returned.\r | |
283 | \r | |
284 | @param AllocationSize The number of bytes to allocate and zero.\r | |
285 | \r | |
286 | @return A pointer to the allocated buffer or NULL if allocation fails.\r | |
287 | \r | |
288 | **/\r | |
289 | VOID *\r | |
290 | EFIAPI\r | |
291 | AllocateRuntimeZeroPool (\r | |
292 | IN UINTN AllocationSize\r | |
293 | );\r | |
294 | \r | |
295 | /**\r | |
296 | Allocates and zeros a buffer of type EfiReservedMemoryType.\r | |
297 | \r | |
298 | Allocates the number bytes specified by AllocationSize of type EfiReservedMemoryType, clears the\r | |
299 | buffer with zeros, and returns a pointer to the allocated buffer. If AllocationSize is 0, then a\r | |
300 | valid buffer of 0 size is returned. If there is not enough memory remaining to satisfy the\r | |
301 | request, then NULL is returned.\r | |
302 | \r | |
303 | @param AllocationSize The number of bytes to allocate and zero.\r | |
304 | \r | |
305 | @return A pointer to the allocated buffer or NULL if allocation fails.\r | |
306 | \r | |
307 | **/\r | |
308 | VOID *\r | |
309 | EFIAPI\r | |
310 | AllocateReservedZeroPool (\r | |
311 | IN UINTN AllocationSize\r | |
312 | );\r | |
313 | \r | |
314 | /**\r | |
315 | Copies a buffer to an allocated buffer of type EfiBootServicesData.\r | |
316 | \r | |
317 | Allocates the number bytes specified by AllocationSize of type EfiBootServicesData, copies\r | |
318 | AllocationSize bytes from Buffer to the newly allocated buffer, and returns a pointer to the\r | |
319 | allocated buffer. If AllocationSize is 0, then a valid buffer of 0 size is returned. If there\r | |
320 | is not enough memory remaining to satisfy the request, then NULL is returned.\r | |
9095d37b | 321 | \r |
fb3df220 | 322 | If Buffer is NULL, then ASSERT().\r |
9095d37b | 323 | If AllocationSize is greater than (MAX_ADDRESS - Buffer + 1), then ASSERT().\r |
fb3df220 | 324 | \r |
325 | @param AllocationSize The number of bytes to allocate and zero.\r | |
326 | @param Buffer The buffer to copy to the allocated buffer.\r | |
327 | \r | |
328 | @return A pointer to the allocated buffer or NULL if allocation fails.\r | |
329 | \r | |
330 | **/\r | |
331 | VOID *\r | |
332 | EFIAPI\r | |
333 | AllocateCopyPool (\r | |
334 | IN UINTN AllocationSize,\r | |
335 | IN CONST VOID *Buffer\r | |
336 | );\r | |
337 | \r | |
338 | /**\r | |
339 | Copies a buffer to an allocated buffer of type EfiRuntimeServicesData.\r | |
340 | \r | |
341 | Allocates the number bytes specified by AllocationSize of type EfiRuntimeServicesData, copies\r | |
342 | AllocationSize bytes from Buffer to the newly allocated buffer, and returns a pointer to the\r | |
343 | allocated buffer. If AllocationSize is 0, then a valid buffer of 0 size is returned. If there\r | |
344 | is not enough memory remaining to satisfy the request, then NULL is returned.\r | |
9095d37b | 345 | \r |
fb3df220 | 346 | If Buffer is NULL, then ASSERT().\r |
9095d37b | 347 | If AllocationSize is greater than (MAX_ADDRESS - Buffer + 1), then ASSERT().\r |
fb3df220 | 348 | \r |
349 | @param AllocationSize The number of bytes to allocate and zero.\r | |
350 | @param Buffer The buffer to copy to the allocated buffer.\r | |
351 | \r | |
352 | @return A pointer to the allocated buffer or NULL if allocation fails.\r | |
353 | \r | |
354 | **/\r | |
355 | VOID *\r | |
356 | EFIAPI\r | |
357 | AllocateRuntimeCopyPool (\r | |
358 | IN UINTN AllocationSize,\r | |
359 | IN CONST VOID *Buffer\r | |
360 | );\r | |
361 | \r | |
362 | /**\r | |
363 | Copies a buffer to an allocated buffer of type EfiReservedMemoryType.\r | |
364 | \r | |
365 | Allocates the number bytes specified by AllocationSize of type EfiReservedMemoryType, copies\r | |
366 | AllocationSize bytes from Buffer to the newly allocated buffer, and returns a pointer to the\r | |
367 | allocated buffer. If AllocationSize is 0, then a valid buffer of 0 size is returned. If there\r | |
368 | is not enough memory remaining to satisfy the request, then NULL is returned.\r | |
9095d37b | 369 | \r |
fb3df220 | 370 | If Buffer is NULL, then ASSERT().\r |
9095d37b | 371 | If AllocationSize is greater than (MAX_ADDRESS - Buffer + 1), then ASSERT().\r |
fb3df220 | 372 | \r |
373 | @param AllocationSize The number of bytes to allocate and zero.\r | |
374 | @param Buffer The buffer to copy to the allocated buffer.\r | |
375 | \r | |
376 | @return A pointer to the allocated buffer or NULL if allocation fails.\r | |
377 | \r | |
378 | **/\r | |
379 | VOID *\r | |
380 | EFIAPI\r | |
381 | AllocateReservedCopyPool (\r | |
382 | IN UINTN AllocationSize,\r | |
383 | IN CONST VOID *Buffer\r | |
384 | );\r | |
385 | \r | |
c2390431 | 386 | /**\r |
387 | Reallocates a buffer of type EfiBootServicesData.\r | |
388 | \r | |
ab95d5f2 | 389 | Allocates and zeros the number bytes specified by NewSize from memory of type\r |
9095d37b LG |
390 | EfiBootServicesData. If OldBuffer is not NULL, then the smaller of OldSize and\r |
391 | NewSize bytes are copied from OldBuffer to the newly allocated buffer, and\r | |
392 | OldBuffer is freed. A pointer to the newly allocated buffer is returned.\r | |
393 | If NewSize is 0, then a valid buffer of 0 size is returned. If there is not\r | |
c2390431 | 394 | enough memory remaining to satisfy the request, then NULL is returned.\r |
9095d37b | 395 | \r |
56304569 | 396 | If the allocation of the new buffer is successful and the smaller of NewSize and OldSize\r |
397 | is greater than (MAX_ADDRESS - OldBuffer + 1), then ASSERT().\r | |
c2390431 | 398 | \r |
399 | @param OldSize The size, in bytes, of OldBuffer.\r | |
400 | @param NewSize The size, in bytes, of the buffer to reallocate.\r | |
9095d37b | 401 | @param OldBuffer The buffer to copy to the allocated buffer. This is an optional\r |
c2390431 | 402 | parameter that may be NULL.\r |
403 | \r | |
404 | @return A pointer to the allocated buffer or NULL if allocation fails.\r | |
405 | \r | |
406 | **/\r | |
407 | VOID *\r | |
408 | EFIAPI\r | |
409 | ReallocatePool (\r | |
410 | IN UINTN OldSize,\r | |
411 | IN UINTN NewSize,\r | |
412 | IN VOID *OldBuffer OPTIONAL\r | |
413 | );\r | |
414 | \r | |
415 | /**\r | |
416 | Reallocates a buffer of type EfiRuntimeServicesData.\r | |
417 | \r | |
ab95d5f2 | 418 | Allocates and zeros the number bytes specified by NewSize from memory of type\r |
9095d37b LG |
419 | EfiRuntimeServicesData. If OldBuffer is not NULL, then the smaller of OldSize and\r |
420 | NewSize bytes are copied from OldBuffer to the newly allocated buffer, and\r | |
421 | OldBuffer is freed. A pointer to the newly allocated buffer is returned.\r | |
422 | If NewSize is 0, then a valid buffer of 0 size is returned. If there is not\r | |
c2390431 | 423 | enough memory remaining to satisfy the request, then NULL is returned.\r |
2297186d | 424 | \r |
56304569 | 425 | If the allocation of the new buffer is successful and the smaller of NewSize and OldSize\r |
426 | is greater than (MAX_ADDRESS - OldBuffer + 1), then ASSERT().\r | |
c2390431 | 427 | \r |
428 | @param OldSize The size, in bytes, of OldBuffer.\r | |
429 | @param NewSize The size, in bytes, of the buffer to reallocate.\r | |
9095d37b | 430 | @param OldBuffer The buffer to copy to the allocated buffer. This is an optional\r |
c2390431 | 431 | parameter that may be NULL.\r |
432 | \r | |
433 | @return A pointer to the allocated buffer or NULL if allocation fails.\r | |
434 | \r | |
435 | **/\r | |
436 | VOID *\r | |
437 | EFIAPI\r | |
438 | ReallocateRuntimePool (\r | |
439 | IN UINTN OldSize,\r | |
440 | IN UINTN NewSize,\r | |
441 | IN VOID *OldBuffer OPTIONAL\r | |
442 | );\r | |
443 | \r | |
444 | /**\r | |
445 | Reallocates a buffer of type EfiReservedMemoryType.\r | |
446 | \r | |
ab95d5f2 | 447 | Allocates and zeros the number bytes specified by NewSize from memory of type\r |
9095d37b LG |
448 | EfiReservedMemoryType. If OldBuffer is not NULL, then the smaller of OldSize and\r |
449 | NewSize bytes are copied from OldBuffer to the newly allocated buffer, and\r | |
450 | OldBuffer is freed. A pointer to the newly allocated buffer is returned.\r | |
451 | If NewSize is 0, then a valid buffer of 0 size is returned. If there is not\r | |
c2390431 | 452 | enough memory remaining to satisfy the request, then NULL is returned.\r |
2297186d | 453 | \r |
56304569 | 454 | If the allocation of the new buffer is successful and the smaller of NewSize and OldSize\r |
455 | is greater than (MAX_ADDRESS - OldBuffer + 1), then ASSERT().\r | |
c2390431 | 456 | \r |
457 | @param OldSize The size, in bytes, of OldBuffer.\r | |
458 | @param NewSize The size, in bytes, of the buffer to reallocate.\r | |
9095d37b | 459 | @param OldBuffer The buffer to copy to the allocated buffer. This is an optional\r |
c2390431 | 460 | parameter that may be NULL.\r |
461 | \r | |
462 | @return A pointer to the allocated buffer or NULL if allocation fails.\r | |
463 | \r | |
464 | **/\r | |
465 | VOID *\r | |
466 | EFIAPI\r | |
467 | ReallocateReservedPool (\r | |
468 | IN UINTN OldSize,\r | |
469 | IN UINTN NewSize,\r | |
470 | IN VOID *OldBuffer OPTIONAL\r | |
471 | );\r | |
472 | \r | |
fb3df220 | 473 | /**\r |
474 | Frees a buffer that was previously allocated with one of the pool allocation functions in the\r | |
475 | Memory Allocation Library.\r | |
476 | \r | |
477 | Frees the buffer specified by Buffer. Buffer must have been allocated on a previous call to the\r | |
6e10b70a | 478 | pool allocation services of the Memory Allocation Library. If it is not possible to free pool\r |
446b94b0 | 479 | resources, then this function will perform no actions.\r |
9095d37b | 480 | \r |
fb3df220 | 481 | If Buffer was not allocated with a pool allocation function in the Memory Allocation Library,\r |
482 | then ASSERT().\r | |
483 | \r | |
484 | @param Buffer Pointer to the buffer to free.\r | |
485 | \r | |
486 | **/\r | |
487 | VOID\r | |
488 | EFIAPI\r | |
489 | FreePool (\r | |
490 | IN VOID *Buffer\r | |
491 | );\r | |
492 | \r | |
fb3df220 | 493 | #endif\r |