diff options
Diffstat (limited to 'src')
| -rw-r--r-- | src/globals.c | 3 | ||||
| -rw-r--r-- | src/util/lock.c | 1 | ||||
| -rw-r--r-- | src/util/mutex.c | 26 |
3 files changed, 30 insertions, 0 deletions
diff --git a/src/globals.c b/src/globals.c index 29760b6..c704cb4 100644 --- a/src/globals.c +++ b/src/globals.c @@ -1,5 +1,6 @@ #define GLOBALS_C #include <sys/schedule.h> +#include <util/mutex.h> char* os_name = "Jobbed"; #ifndef VERSION char* os_info_v = "?"; @@ -16,6 +17,8 @@ __attribute__((section(".bss"))) unsigned int gwidth; __attribute__((section(".bss"))) unsigned int gheight; __attribute__((section(".bss"))) unsigned int gpitch; __attribute__((section(".bss"))) unsigned int gisrgb; +__attribute__((section(".bss.mutexl"))) unsigned long mutex_table[MAX_MUTEXS]; +__attribute__((section(".bss.mutexs"))) struct Mutex mutexs[MAX_MUTEXS]; // 0 - Free // 1 - Ready // 2 - Waiting for Mutex diff --git a/src/util/lock.c b/src/util/lock.c index 95f93af..eaeb5a8 100644 --- a/src/util/lock.c +++ b/src/util/lock.c @@ -1,5 +1,6 @@ #include <cpu.h> #include <cpu/atomic/swap.h> +#include <util/mutex.h> #include <util/lock.h> // TODO: Improve locking for system diff --git a/src/util/mutex.c b/src/util/mutex.c index e69de29..3171501 100644 --- a/src/util/mutex.c +++ b/src/util/mutex.c @@ -0,0 +1,26 @@ +#include <util/mutex.h> +#include <globals.h> + +struct Mutex* create_mutex(void* addr) +{ + for (unsigned long m = 0; m < MAX_MUTEXS; m++) { + if (mutex_table[m] == 0) { + mutex_table[m] = (unsigned long)addr; + mutexs[m].pid = 0; + mutexs[m].addr = addr; + return &mutexs[m]; + } + } + return 0; +} + +unsigned char delete_mutex(struct Mutex* m) +{ + for (unsigned long i = 0; i < MAX_MUTEXS; i++) { + if (mutex_table[i] == (unsigned long)m->addr) { + mutex_table[i] = 0; + return 0; + } + } + return 1; +} |