X-Git-Url: http://repo.macrolet.net/gitweb/?a=blobdiff_plain;f=src%2Fruntime%2Fthread.h;h=c252afadc7074145d8863c64caba4dad7381dbf4;hb=2db410feb35e7e30c95af8f20f67e6177fa92488;hp=cf0a26eab42219d6e535cca51b80298d961d5b98;hpb=d767105094f5836327f9389b061f83a44240a279;p=sbcl.git

diff --git a/src/runtime/thread.h b/src/runtime/thread.h
index cf0a26e..c252afa 100644
--- a/src/runtime/thread.h
+++ b/src/runtime/thread.h
@@ -1,11 +1,12 @@
-
 #if !defined(_INCLUDE_THREAD_H_)
 #define _INCLUDE_THREAD_H_
 
 #include <sys/types.h>
 #include <unistd.h>
-#include "runtime.h"
+#include <stddef.h>
 #include "sbcl.h"
+#include "globals.h"
+#include "runtime.h"
 #include "os.h"
 #include "interrupt.h"
 #ifdef LISP_FEATURE_GENCGC
@@ -16,18 +17,31 @@ struct alloc_region { };
 #include "genesis/symbol.h"
 #include "genesis/static-symbols.h"
 #include "genesis/thread.h"
+#include "genesis/fdefn.h"
+
+#define STATE_RUNNING (make_fixnum(1))
+#define STATE_SUSPENDED (make_fixnum(2))
+#define STATE_DEAD (make_fixnum(3))
 
 #define THREAD_SLOT_OFFSET_WORDS(c) \
  (offsetof(struct thread,c)/(sizeof (struct thread *)))
 
 union per_thread_data {
     struct thread thread;
-    lispobj dynamic_values[1];	/* actually more like 4000 or so */
+    lispobj dynamic_values[1];  /* actually more like 4000 or so */
 };
 
-extern struct thread *all_threads;
+extern struct thread * volatile all_threads;
 extern int dynamic_values_bytes;
-extern struct thread *find_thread_by_pid(pid_t pid);
+
+#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)
@@ -37,58 +51,156 @@ extern struct thread *find_thread_by_pid(pid_t pid);
 #define for_each_thread(th) for(th=all_threads;th;th=0)
 #endif
 
-static inline lispobj SymbolValue(u32 tagged_symbol_pointer, void *thread) {
+static inline lispobj
+SymbolValue(u64 tagged_symbol_pointer, void *thread)
+{
     struct symbol *sym= (struct symbol *)
-	(tagged_symbol_pointer-OTHER_POINTER_LOWTAG);
+        (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!=UNBOUND_MARKER_WIDETAG) return r;
+        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 SymbolTlValue(u32 tagged_symbol_pointer, void *thread) {
+
+static inline lispobj
+SymbolTlValue(u64 tagged_symbol_pointer, void *thread)
+{
     struct symbol *sym= (struct symbol *)
-	(tagged_symbol_pointer-OTHER_POINTER_LOWTAG);
+        (pointer_sized_uint_t)(tagged_symbol_pointer-OTHER_POINTER_LOWTAG);
 #ifdef LISP_FEATURE_SB_THREAD
     return ((union per_thread_data *)thread)
-	->dynamic_values[fixnum_value(sym->tls_index)];
+        ->dynamic_values[fixnum_value(sym->tls_index)];
 #else
     return sym->value;
 #endif
 }
 
-static inline void SetSymbolValue(u32 tagged_symbol_pointer,lispobj val, void *thread) {
-    struct symbol *sym=	(struct symbol *)
-	(tagged_symbol_pointer-OTHER_POINTER_LOWTAG);
+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) {
-	    *pr=val;
-	    return;
-	}
+        lispobj *pr= &(((union per_thread_data *)thread)
+                       ->dynamic_values[fixnum_value(sym->tls_index)]);
+        if(*pr!=NO_TLS_VALUE_MARKER_WIDETAG) {
+            *pr=val;
+            return;
+        }
     }
 #endif
     sym->value = val;
 }
-static inline void SetTlSymbolValue(u32 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 *)
-	(tagged_symbol_pointer-OTHER_POINTER_LOWTAG);
+    struct symbol *sym= (struct symbol *)
+        (pointer_sized_uint_t)(tagged_symbol_pointer-OTHER_POINTER_LOWTAG);
     ((union per_thread_data *)thread)
-	->dynamic_values[fixnum_value(sym->tls_index)]
-	=val;
+        ->dynamic_values[fixnum_value(sym->tls_index)]
+        =val;
 #else
     SetSymbolValue(tagged_symbol_pointer,val,thread) ;
 #endif
 }
 
-int arch_os_thread_init(struct thread *thread);
-extern struct thread *arch_os_get_current_thread();
+/* 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(void)
+{
+#if defined(LISP_FEATURE_SB_THREAD)
+#if defined(LISP_FEATURE_X86)
+    register struct thread *me=0;
+    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_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
+
+#if defined(LISP_FEATURE_SB_THREAD)
+#define thread_self pthread_self
+#define thread_kill pthread_kill
+#define thread_sigmask pthread_sigmask
+#define thread_mutex_lock(l) pthread_mutex_lock(l)
+#define thread_mutex_unlock(l) pthread_mutex_unlock(l)
+#else
+#define thread_self getpid
+#define thread_kill kill
+#define thread_sigmask sigprocmask
+#define thread_mutex_lock(l) 0
+#define thread_mutex_unlock(l) 0
+#endif
+
+extern void create_initial_thread(lispobj);
+extern int kill_thread_safely(os_thread_t os_thread, int signo);
 
 #endif /* _INCLUDE_THREAD_H_ */