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Comparing deliantra/server/include/util.h (file contents):
Revision 1.65 by root, Tue Apr 1 19:50:38 2008 UTC vs.
Revision 1.69 by root, Fri Apr 18 23:43:59 2008 UTC

… …
43// is mostly true or mosty false. note that these return 43// is mostly true or mosty false. note that these return
44// booleans, not the expression. 44// booleans, not the expression.
45#define expect_false(expr) expect ((expr) != 0, 0) 45#define expect_false(expr) expect ((expr) != 0, 0)
46#define expect_true(expr) expect ((expr) != 0, 1) 46#define expect_true(expr) expect ((expr) != 0, 1)
47 47
48#include <pthread.h>
49
48#include <cstddef> 50#include <cstddef>
49#include <cmath> 51#include <cmath>
50#include <new> 52#include <new>
51#include <vector> 53#include <vector>
52 54
… …
60# define g_slice_alloc(s) debug_slice_alloc(s) 62# define g_slice_alloc(s) debug_slice_alloc(s)
61# define g_slice_free1(s,p) debug_slice_free1(s,p) 63# define g_slice_free1(s,p) debug_slice_free1(s,p)
62void *g_slice_alloc (unsigned long size); 64void *g_slice_alloc (unsigned long size);
63void *g_slice_alloc0 (unsigned long size); 65void *g_slice_alloc0 (unsigned long size);
64void g_slice_free1 (unsigned long size, void *ptr); 66void g_slice_free1 (unsigned long size, void *ptr);
67#elif PREFER_MALLOC
68# define g_slice_alloc0(s) calloc (1, (s))
69# define g_slice_alloc(s) malloc ((s))
70# define g_slice_free1(s,p) free ((p))
65#endif 71#endif
66 72
67// 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)
68#define auto(var,expr) decltype(expr) var = (expr) 74#define auto(var,expr) decltype(expr) var = (expr)
69 75
… …
80 86
81// in range excluding end 87// in range excluding end
82#define IN_RANGE_EXC(val,beg,end) \ 88#define IN_RANGE_EXC(val,beg,end) \
83 ((unsigned int)(val) - (unsigned int)(beg) < (unsigned int)(end) - (unsigned int)(beg)) 89 ((unsigned int)(val) - (unsigned int)(beg) < (unsigned int)(end) - (unsigned int)(beg))
84 90
91void cleanup (const char *cause, bool make_core = false);
85void fork_abort (const char *msg); 92void fork_abort (const char *msg);
86 93
87// rationale for using (U) not (T) is to reduce signed/unsigned issues, 94// rationale for using (U) not (T) is to reduce signed/unsigned issues,
88// as a is often a constant while b is the variable. it is still a bug, though. 95// as a is often a constant while b is the variable. it is still a bug, though.
89template<typename T, typename U> static inline T min (T a, U b) { return (U)a < b ? (U)a : b; } 96template<typename T, typename U> static inline T min (T a, U b) { return (U)a < b ? (U)a : b; }
… …
185absdir (int d) 192absdir (int d)
186{ 193{
187 return ((d - 1) & 7) + 1; 194 return ((d - 1) & 7) + 1;
188} 195}
189 196
190extern size_t slice_alloc; // statistics 197extern ssize_t slice_alloc; // statistics
191
192// makes dynamically allocated objects zero-initialised
193struct zero_initialised
194{
195 void *operator new (size_t s, void *p)
196 {
197 memset (p, 0, s);
198 return p;
199 }
200
201 void *operator new (size_t s)
202 {
203 slice_alloc += s;
204 return g_slice_alloc0 (s);
205 }
206
207 void *operator new[] (size_t s)
208 {
209 slice_alloc += s;
210 return g_slice_alloc0 (s);
211 }
212
213 void operator delete (void *p, size_t s)
214 {
215 slice_alloc -= s;
216 g_slice_free1 (s, p);
217 }
218
219 void operator delete[] (void *p, size_t s)
220 {
221 slice_alloc -= s;
222 g_slice_free1 (s, p);
223 }
224};
225 198
226void *salloc_ (int n) throw (std::bad_alloc); 199void *salloc_ (int n) throw (std::bad_alloc);
227void *salloc_ (int n, void *src) throw (std::bad_alloc); 200void *salloc_ (int n, void *src) throw (std::bad_alloc);
228 201
229// strictly the same as g_slice_alloc, but never returns 0 202// strictly the same as g_slice_alloc, but never returns 0
… …
241 214
242// for symmetry 215// for symmetry
243template<typename T> 216template<typename T>
244inline void sfree (T *ptr, int n = 1) throw () 217inline void sfree (T *ptr, int n = 1) throw ()
245{ 218{
246#if PREFER_MALLOC 219 if (expect_true (ptr))
247 free (ptr); 220 {
248#else
249 slice_alloc -= n * sizeof (T); 221 slice_alloc -= n * sizeof (T);
250 g_slice_free1 (n * sizeof (T), (void *)ptr); 222 g_slice_free1 (n * sizeof (T), (void *)ptr);
251#endif 223 assert (slice_alloc >= 0);//D
224 }
252} 225}
226
227// makes dynamically allocated objects zero-initialised
228struct zero_initialised
229{
230 void *operator new (size_t s, void *p)
231 {
232 memset (p, 0, s);
233 return p;
234 }
235
236 void *operator new (size_t s)
237 {
238 return salloc0<char> (s);
239 }
240
241 void *operator new[] (size_t s)
242 {
243 return salloc0<char> (s);
244 }
245
246 void operator delete (void *p, size_t s)
247 {
248 sfree ((char *)p, s);
249 }
250
251 void operator delete[] (void *p, size_t s)
252 {
253 sfree ((char *)p, s);
254 }
255};
253 256
254// a STL-compatible allocator that uses g_slice 257// a STL-compatible allocator that uses g_slice
255// boy, this is verbose 258// boy, this is verbose
256template<typename Tp> 259template<typename Tp>
257struct slice_allocator 260struct slice_allocator
… …
568int similar_direction (int a, int b); 571int similar_direction (int a, int b);
569 572
570// like sprintf, but returns a "static" buffer 573// like sprintf, but returns a "static" buffer
571const char *format (const char *format, ...); 574const char *format (const char *format, ...);
572 575
576/////////////////////////////////////////////////////////////////////////////
577// threads, very very thin wrappers around pthreads
578
579struct thread
580{
581 pthread_t id;
582
583 void start (void *(*start_routine)(void *), void *arg = 0);
584
585 void cancel ()
586 {
587 pthread_cancel (id);
588 }
589
590 void *join ()
591 {
592 void *ret;
593
594 if (pthread_join (id, &ret))
595 cleanup ("pthread_join failed", 1);
596
597 return ret;
598 }
599};
600
601// note that mutexes are not classes
602typedef pthread_mutex_t smutex;
603
604#if __linux && defined (PTHREAD_ADAPTIVE_MUTEX_INITIALIZER_NP)
605 #define SMUTEX_INITIALISER PTHREAD_ADAPTIVE_MUTEX_INITIALIZER_NP
606#else
607 #define SMUTEX_INITIALISER PTHREAD_MUTEX_INITIALIZER
573#endif 608#endif
574 609
610#define SMUTEX(name) smutex name = SMUTEX_INITIALISER
611#define SMUTEX_LOCK(name) pthread_mutex_lock (&(name))
612#define SMUTEX_UNLOCK(name) pthread_mutex_unlock (&(name))
613
614typedef pthread_cond_t scond;
615
616#define SCOND(name) scond name = PTHREAD_COND_INITIALIZER
617#define SCOND_SIGNAL(name) pthread_cond_signal (&(name))
618#define SCOND_BROADCAST(name) pthread_cond_broadcast (&(name))
619#define SCOND_WAIT(name,mutex) pthread_cond_wait (&(name), &(mutex))
620
621#endif
622

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