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62 | # define g_slice_alloc(s) debug_slice_alloc(s) |
62 | # define g_slice_alloc(s) debug_slice_alloc(s) |
63 | # define g_slice_free1(s,p) debug_slice_free1(s,p) |
63 | # define g_slice_free1(s,p) debug_slice_free1(s,p) |
64 | void *g_slice_alloc (unsigned long size); |
64 | void *g_slice_alloc (unsigned long size); |
65 | void *g_slice_alloc0 (unsigned long size); |
65 | void *g_slice_alloc0 (unsigned long size); |
66 | void g_slice_free1 (unsigned long size, void *ptr); |
66 | void g_slice_free1 (unsigned long size, void *ptr); |
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67 | #elif PREFER_MALLOC |
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68 | # define g_slice_alloc0(s) calloc (1, (s)) |
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69 | # define g_slice_alloc(s) malloc ((s)) |
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70 | # define g_slice_free1(s,p) free ((s)) |
67 | #endif |
71 | #endif |
68 | |
72 | |
69 | // use C0X decltype for auto declarations until ISO C++ sanctifies them (if ever) |
73 | // use C0X decltype for auto declarations until ISO C++ sanctifies them (if ever) |
70 | #define auto(var,expr) decltype(expr) var = (expr) |
74 | #define auto(var,expr) decltype(expr) var = (expr) |
71 | |
75 | |
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188 | absdir (int d) |
192 | absdir (int d) |
189 | { |
193 | { |
190 | return ((d - 1) & 7) + 1; |
194 | return ((d - 1) & 7) + 1; |
191 | } |
195 | } |
192 | |
196 | |
193 | extern size_t slice_alloc; // statistics |
197 | extern ssize_t slice_alloc; // statistics |
194 | |
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195 | // makes dynamically allocated objects zero-initialised |
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196 | struct zero_initialised |
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197 | { |
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198 | void *operator new (size_t s, void *p) |
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199 | { |
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200 | memset (p, 0, s); |
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201 | return p; |
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202 | } |
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203 | |
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204 | void *operator new (size_t s) |
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205 | { |
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206 | slice_alloc += s; |
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207 | return g_slice_alloc0 (s); |
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208 | } |
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209 | |
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210 | void *operator new[] (size_t s) |
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211 | { |
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212 | slice_alloc += s; |
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213 | return g_slice_alloc0 (s); |
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214 | } |
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215 | |
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216 | void operator delete (void *p, size_t s) |
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217 | { |
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218 | slice_alloc -= s; |
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219 | g_slice_free1 (s, p); |
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220 | } |
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221 | |
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222 | void operator delete[] (void *p, size_t s) |
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223 | { |
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224 | slice_alloc -= s; |
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225 | g_slice_free1 (s, p); |
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226 | } |
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227 | }; |
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228 | |
198 | |
229 | void *salloc_ (int n) throw (std::bad_alloc); |
199 | void *salloc_ (int n) throw (std::bad_alloc); |
230 | void *salloc_ (int n, void *src) throw (std::bad_alloc); |
200 | void *salloc_ (int n, void *src) throw (std::bad_alloc); |
231 | |
201 | |
232 | // strictly the same as g_slice_alloc, but never returns 0 |
202 | // strictly the same as g_slice_alloc, but never returns 0 |
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244 | |
214 | |
245 | // for symmetry |
215 | // for symmetry |
246 | template<typename T> |
216 | template<typename T> |
247 | inline void sfree (T *ptr, int n = 1) throw () |
217 | inline void sfree (T *ptr, int n = 1) throw () |
248 | { |
218 | { |
249 | #if PREFER_MALLOC |
219 | if (expect_true (ptr)) |
250 | free (ptr); |
220 | { |
251 | #else |
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252 | slice_alloc -= n * sizeof (T); |
221 | slice_alloc -= n * sizeof (T); |
253 | g_slice_free1 (n * sizeof (T), (void *)ptr); |
222 | g_slice_free1 (n * sizeof (T), (void *)ptr); |
254 | #endif |
223 | assert (slice_alloc >= 0);//D |
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224 | } |
255 | } |
225 | } |
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226 | |
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227 | // makes dynamically allocated objects zero-initialised |
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228 | struct zero_initialised |
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229 | { |
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230 | void *operator new (size_t s, void *p) |
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231 | { |
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232 | memset (p, 0, s); |
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233 | return p; |
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234 | } |
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235 | |
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236 | void *operator new (size_t s) |
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237 | { |
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238 | return salloc0<char> (s); |
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239 | } |
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240 | |
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241 | void *operator new[] (size_t s) |
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242 | { |
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243 | return salloc0<char> (s); |
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244 | } |
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245 | |
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246 | void operator delete (void *p, size_t s) |
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247 | { |
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248 | sfree ((char *)p, s); |
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249 | } |
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250 | |
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251 | void operator delete[] (void *p, size_t s) |
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252 | { |
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253 | sfree ((char *)p, s); |
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254 | } |
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255 | }; |
256 | |
256 | |
257 | // a STL-compatible allocator that uses g_slice |
257 | // a STL-compatible allocator that uses g_slice |
258 | // boy, this is verbose |
258 | // boy, this is verbose |
259 | template<typename Tp> |
259 | template<typename Tp> |
260 | struct slice_allocator |
260 | struct slice_allocator |