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reverting semaphore lock changes from sources (r41ccd6d221da, rb28756e5ba29)

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semaphore locks have much higher overhead than initially presented
in the "Semaphores in Plan9" paper. until the reason for it has been
found out i will revert the changes.
This commit is contained in:
cinap_lenrek 2013-09-26 22:24:31 +02:00
parent b4cdfc6c55
commit cdc2c30e99
39 changed files with 521 additions and 611 deletions
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3
sys/include/ape/lock.h
View file

@ -10,8 +10,7 @@
typedef struct
{
long key;
long sem;
int val;
} Lock;
#ifdef __cplusplus

12
sys/include/libc.h
View file

@ -409,19 +409,12 @@ enum {
}; /* what */
extern void prof(void (*fn)(void*), void *arg, int entries, int what);
/*
* atomic
*/
extern long ainc(long*);
extern long adec(long*);
/*
* synchronization
*/
typedef
struct Lock {
long key;
long sem;
int val;
} Lock;
extern int _tas(int*);
@ -708,6 +701,9 @@ extern char* sysname(void);
extern void werrstr(char*, ...);
#pragma varargck argpos werrstr 1
extern long ainc(long*);
extern long adec(long*);
extern char *argv0;
#define ARGBEGIN for((argv0||(argv0=*argv)),argv++,argc--;\
argv[0] && argv[0][0]=='-' && argv[0][1];\