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@ -1,7 +1,7 @@
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/****
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/****
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* file threads.c
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* file threads.c
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*
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*
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A partial implementation of a user-level thread package
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A partial implementation of a user-level thread package
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Written by Douglas Jones, Feb 17, 1998
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Written by Douglas Jones, Feb 17, 1998
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Updated with minor bug fix in thread_exit, Feb 19, 1998
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Updated with minor bug fix in thread_exit, Feb 19, 1998
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Updated so free called on original stack, Feb 19, 2002
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Updated so free called on original stack, Feb 19, 2002
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@ -39,7 +39,7 @@
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* This is the key to user-level context switching *
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* This is the key to user-level context switching *
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****/
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****/
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/**** *
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/**** *
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* tools used by studyit to understand jump buffer structure *
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* tools used by studyit to understand jump buffer structure *
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* ****/
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* ****/
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static int * low_bound; /* below probe on stack */
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static int * low_bound; /* below probe on stack */
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static int * probe_local; /* local to probe on stack */
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static int * probe_local; /* local to probe on stack */
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@ -64,7 +64,7 @@ jmp_buf probe_record; /* nonzero entries mean fields that change */
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/****
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/****
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* code to explore the activation record *
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* code to explore the activation record *
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* and jump buffer structure *
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* and jump buffer structure *
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****/
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****/
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void boundhigh()
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void boundhigh()
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/* purpose: set high_bound to a local variable beyond probe on stack */
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/* purpose: set high_bound to a local variable beyond probe on stack */
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@ -152,7 +152,7 @@ static void studyit()
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}
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}
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}
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}
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}
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}
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p++, sameAR++, samePC++, probe_rec++;
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p++, sameAR++, samePC++, probe_rec++;
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}
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}
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@ -195,7 +195,7 @@ void thread_startup_report()
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****/
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****/
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/**** *
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/**** *
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* thread data types *
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* thread data types *
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* ****/
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* ****/
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struct thread {
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struct thread {
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@ -229,7 +229,7 @@ static jmp_buf thread_death; /* used on thread package death */
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static jmp_buf go_free_it; /* used to call free from original stk */
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static jmp_buf go_free_it; /* used to call free from original stk */
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/**** *
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/**** *
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* code for thread_queue data type *
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* code for thread_queue data type *
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* ****/
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* ****/
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static void thread_queue_init( struct thread_queue * q )
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static void thread_queue_init( struct thread_queue * q )
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@ -266,7 +266,7 @@ static struct thread * thread_dequeue( struct thread_queue * q )
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}
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}
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/**** *
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/**** *
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* user callable thread management routines *
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* user callable thread management routines *
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* ****/
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* ****/
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void thread_manager_init()
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void thread_manager_init()
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