X-Git-Url: http://repo.macrolet.net/gitweb/?a=blobdiff_plain;f=src%2Fruntime%2Fthread.h;h=f8ec4e71b67822d9ab64351aa62924bb60c9bdae;hb=409fcc671231b594ec010adf683f72a871ec1d6a;hp=6aa8f60cf65f6881aee37f432af65468792cbbf3;hpb=79cc569a97e444389350ea3f5b1017374fe16bec;p=sbcl.git

diff --git a/src/runtime/thread.h b/src/runtime/thread.h
index 6aa8f60..f8ec4e7 100644
--- a/src/runtime/thread.h
+++ b/src/runtime/thread.h
@@ -17,12 +17,45 @@ struct alloc_region { };
 #include "genesis/symbol.h"
 #include "genesis/static-symbols.h"
 #include "genesis/thread.h"
+#include "genesis/fdefn.h"
 
-#define STATE_STARTING (make_fixnum(0))
 #define STATE_RUNNING (make_fixnum(1))
 #define STATE_SUSPENDED (make_fixnum(2))
 #define STATE_DEAD (make_fixnum(3))
 
+#ifdef LISP_FEATURE_SB_THREAD
+
+/* Only access thread state with blockables blocked. */
+static inline lispobj
+thread_state(struct thread *thread)
+{
+    lispobj state;
+    pthread_mutex_lock(thread->state_lock);
+    state = thread->state;
+    pthread_mutex_unlock(thread->state_lock);
+    return state;
+}
+
+static inline void
+set_thread_state(struct thread *thread, lispobj state)
+{
+    pthread_mutex_lock(thread->state_lock);
+    thread->state = state;
+    pthread_cond_broadcast(thread->state_cond);
+    pthread_mutex_unlock(thread->state_lock);
+}
+
+static inline void
+wait_for_thread_state_change(struct thread *thread, lispobj state)
+{
+    pthread_mutex_lock(thread->state_lock);
+    while (thread->state == state)
+        pthread_cond_wait(thread->state_cond, thread->state_lock);
+    pthread_mutex_unlock(thread->state_lock);
+}
+
+#endif
+
 #define THREAD_SLOT_OFFSET_WORDS(c) \
  (offsetof(struct thread,c)/(sizeof (struct thread *)))
 
@@ -34,6 +67,15 @@ union per_thread_data {
 extern struct thread *all_threads;
 extern int dynamic_values_bytes;
 
+#if defined(LISP_FEATURE_DARWIN)
+#define CONTROL_STACK_ALIGNMENT_BYTES 8192 /* darwin wants page-aligned stacks */
+#define THREAD_ALIGNMENT_BYTES CONTROL_STACK_ALIGNMENT_BYTES
+#else
+#define THREAD_ALIGNMENT_BYTES BACKEND_PAGE_BYTES
+#define CONTROL_STACK_ALIGNMENT_BYTES 16
+#endif
+
+
 #ifdef LISP_FEATURE_SB_THREAD
 #define for_each_thread(th) for(th=all_threads;th;th=th->next)
 #else
@@ -42,7 +84,24 @@ extern int dynamic_values_bytes;
 #define for_each_thread(th) for(th=all_threads;th;th=0)
 #endif
 
-static inline lispobj SymbolValue(u64 tagged_symbol_pointer, void *thread) {
+static inline lispobj *
+SymbolValueAddress(u64 tagged_symbol_pointer, void *thread)
+{
+    struct symbol *sym= (struct symbol *)
+        (pointer_sized_uint_t)(tagged_symbol_pointer-OTHER_POINTER_LOWTAG);
+#ifdef LISP_FEATURE_SB_THREAD
+    if(thread && sym->tls_index) {
+        lispobj *r = &(((union per_thread_data *)thread)
+                       ->dynamic_values[fixnum_value(sym->tls_index)]);
+        if((*r)!=NO_TLS_VALUE_MARKER_WIDETAG) return r;
+    }
+#endif
+    return &sym->value;
+}
+
+static inline lispobj
+SymbolValue(u64 tagged_symbol_pointer, void *thread)
+{
     struct symbol *sym= (struct symbol *)
         (pointer_sized_uint_t)(tagged_symbol_pointer-OTHER_POINTER_LOWTAG);
 #ifdef LISP_FEATURE_SB_THREAD
@@ -50,12 +109,15 @@ static inline lispobj SymbolValue(u64 tagged_symbol_pointer, void *thread) {
         lispobj r=
             ((union per_thread_data *)thread)
             ->dynamic_values[fixnum_value(sym->tls_index)];
-        if(r!=UNBOUND_MARKER_WIDETAG) return r;
+        if(r!=NO_TLS_VALUE_MARKER_WIDETAG) return r;
     }
 #endif
     return sym->value;
 }
-static inline lispobj SymbolTlValue(u64 tagged_symbol_pointer, void *thread) {
+
+static inline lispobj
+SymbolTlValue(u64 tagged_symbol_pointer, void *thread)
+{
     struct symbol *sym= (struct symbol *)
         (pointer_sized_uint_t)(tagged_symbol_pointer-OTHER_POINTER_LOWTAG);
 #ifdef LISP_FEATURE_SB_THREAD
@@ -66,14 +128,16 @@ static inline lispobj SymbolTlValue(u64 tagged_symbol_pointer, void *thread) {
 #endif
 }
 
-static inline void SetSymbolValue(u64 tagged_symbol_pointer,lispobj val, void *thread) {
+static inline void
+SetSymbolValue(u64 tagged_symbol_pointer,lispobj val, void *thread)
+{
     struct symbol *sym= (struct symbol *)
         (pointer_sized_uint_t)(tagged_symbol_pointer-OTHER_POINTER_LOWTAG);
 #ifdef LISP_FEATURE_SB_THREAD
     if(thread && sym->tls_index) {
         lispobj *pr= &(((union per_thread_data *)thread)
                        ->dynamic_values[fixnum_value(sym->tls_index)]);
-        if(*pr!= UNBOUND_MARKER_WIDETAG) {
+        if(*pr!=NO_TLS_VALUE_MARKER_WIDETAG) {
             *pr=val;
             return;
         }
@@ -81,7 +145,10 @@ static inline void SetSymbolValue(u64 tagged_symbol_pointer,lispobj val, void *t
 #endif
     sym->value = val;
 }
-static inline void SetTlSymbolValue(u64 tagged_symbol_pointer,lispobj val, void *thread) {
+
+static inline void
+SetTlSymbolValue(u64 tagged_symbol_pointer,lispobj val, void *thread)
+{
 #ifdef LISP_FEATURE_SB_THREAD
     struct symbol *sym= (struct symbol *)
         (pointer_sized_uint_t)(tagged_symbol_pointer-OTHER_POINTER_LOWTAG);
@@ -93,43 +160,81 @@ static inline void SetTlSymbolValue(u64 tagged_symbol_pointer,lispobj val, void
 #endif
 }
 
-static inline os_context_t *get_interrupt_context_for_thread(struct thread *th)
+/* This only works for static symbols. */
+static inline lispobj
+StaticSymbolFunction(lispobj sym)
+{
+    return ((struct fdefn *)native_pointer(SymbolValue(sym, 0)))->fun;
+}
+
+static inline
+os_context_t *get_interrupt_context_for_thread(struct thread *th)
 {
     return th->interrupt_contexts
         [fixnum_value(SymbolValue(FREE_INTERRUPT_CONTEXT_INDEX,th)-1)];
 }
 
+#if defined(LISP_FEATURE_SB_THREAD) && defined(LISP_FEATURE_GCC_TLS)
+extern __thread struct thread *current_thread;
+#endif
+
 /* This is clearly per-arch and possibly even per-OS code, but we can't
  * put it somewhere sensible like x86-linux-os.c because it needs too
  * much stuff like struct thread and all_threads to be defined, which
  * usually aren't by that time.  So, it's here instead.  Sorry */
 
-static inline struct thread *arch_os_get_current_thread() {
+static inline struct thread *arch_os_get_current_thread(void)
+{
 #if defined(LISP_FEATURE_SB_THREAD)
 #if defined(LISP_FEATURE_X86)
     register struct thread *me=0;
-    if(all_threads)
+    if(all_threads) {
+#if defined(LISP_FEATURE_DARWIN) && defined(LISP_FEATURE_RESTORE_FS_SEGMENT_REGISTER_FROM_TLS)
+        sel_t sel;
+        struct thread *th = pthread_getspecific(specials);
+        sel.index = th->tls_cookie;
+        sel.rpl = USER_PRIV;
+        sel.ti = SEL_LDT;
+        __asm__ __volatile__ ("movw %w0, %%fs" : : "r"(sel));
+#elif defined(LISP_FEATURE_FREEBSD)
+#ifdef LISP_FEATURE_GCC_TLS
+        struct thread *th = current_thread;
+#else
+        struct thread *th = pthread_getspecific(specials);
+#endif
+#ifdef LISP_FEATURE_RESTORE_TLS_SEGMENT_REGISTER_FROM_TLS
+        unsigned int sel = LSEL(th->tls_cookie, SEL_UPL);
+        unsigned int fs = rfs();
+
+        /* Load FS only if it's necessary.  Modifying a selector
+         * causes privilege checking and it takes long time. */
+        if (fs != sel)
+            load_fs(sel);
+#endif
+        return th;
+#endif
         __asm__ __volatile__ ("movl %%fs:%c1,%0" : "=r" (me)
                  : "i" (offsetof (struct thread,this)));
+    }
     return me;
 #else
+#ifdef LISP_FEATURE_GCC_TLS
+    return current_thread;
+#else
     return pthread_getspecific(specials);
+#endif
 #endif /* x86 */
 #else
      return all_threads;
 #endif
 }
 
-#if defined(LISP_FEATURE_SB_THREAD)
-#define thread_self pthread_self
-#define thread_kill pthread_kill
-#define thread_sigmask pthread_sigmask
-#else
-#define thread_self getpid
-#define thread_kill kill
-#define thread_sigmask sigprocmask
+#if defined(LISP_FEATURE_MACH_EXCEPTION_HANDLER)
+#define THREAD_STRUCT_TO_EXCEPTION_PORT(th) ((mach_port_t) th)
+#define EXCEPTION_PORT_TO_THREAD_STRUCT(th) ((struct thread *) th)
 #endif
 
 extern void create_initial_thread(lispobj);
+extern int kill_thread_safely(os_thread_t os_thread, int signo);
 
 #endif /* _INCLUDE_THREAD_H_ */