Changes between Version 122 and Version 123 of processus_thread

Timestamp:

Jan 19, 2020, 11:54:02 PM (4 years ago)

Author:

alain

Comment:

--

processus_thread

@@ -15 +15 @@
 
 In each cluster K, the local cluster manager ( [https://www-soc.lip6.fr/trac/almos-mkh/browser/trunk/kernel/kern/cluster.h#L97 cluster_t] type in ALMOS-MKH ) contains a process manager ( [https://www-soc.lip6.fr/trac/almos-mkh/browser/trunk/kernel/kern/cluster.h#L75 pmgr_t]  type in ALMOS-MKH ) that maintains three structures for all processes owned by K :
- * The [https://www-soc.lip6.fr/trac/almos-mkh/browser/trunk/kernel/kern/cluster.h#L77 pref_tbl[lpid]] is an array indexed by the local process index. Each entry contains an extended pointer on the reference process descriptor.
+ * The [https://www-soc.lip6.fr/trac/almos-mkh/browser/trunk/kernel/kern/cluster.h#L77 pref_tbl[lpid]] is an array indexed by the local process index. Each entry contains an extended pointer on the reference process descriptor for each process owned by cluster K.
  * The [https://www-soc.lip6.fr/trac/almos-mkh/browser/trunk/kernel/kern/cluster.h#L85 copies_root[lpid]] array is also indexed by the local process index. Each entry contains the root of the global list of copies for each process owned by cluster K.   
  * The [https://www-soc.lip6.fr/trac/almos-mkh/browser/trunk/kernel/kern/cluster.h#L81 local_root] is the local list of all process descriptors in cluster K. A process descriptor copy of P is present in K, as soon as P has a thread in cluster K.
@@ -26 +26 @@
 
 You can find below a partial list of information stored in a process descriptor ( [https://www-soc.lip6.fr/trac/almos-mkh/browser/trunk/kernel/kern/process.h#L111 process_t] in ALMOS-MKH ):
-- '''PID''' :  proces identifier.
-- '''PPID''' : parent process identifier, 
-- '''PREF''' : extended pointer on the reference process descriptor.
-- '''STATE''': current process state.
-- '''VSL''' : root of the local list of virtual segments defining the memory image.
-- '''GPT''' : generic page table defining the physical memory mapping.
-- '''FDT''' : open file descriptors table.
-- '''TH_TBL''' : local table of threads owned by this process in this cluster.
-- '''LOCAL_LIST''' : member of local list of all process descriptors in same cluster. 
-- '''COPIES_LIST''' : member of global list of all descriptors of same process.
-- '''CHILDREN_LIST''' : member of global list of all children of same parent process.
-- '''CHILDREN_ROOT''' : root of global list of children process.
-
-All elements of a ''local'' list are in the same cluster, so ALMOS-MKH uses local pointers. Elements of a ''global'' list can be distributed on all clusters, so ALMOS-MKH uses extended pointers.
+- '''pid''' :  proces identifier.
+- '''parent_xp''' : extended pointer on parent process identifier, 
+- '''owner_xp''' : extended pointer on the owner process descriptor.
+- '''ref_xp''' : extended pointer on the reference process descriptor.
+- '''vmm.vsl''' : root of the local list of vsegs defining the process memory image.
+- '''vmm.gpt''' : generic page table defining the mapping of the process vsegs.
+- '''fd_array'' : open file descriptors table.
+- '''th_tbl''' : local table of threads owned by this process in this cluster.
+- '''local_list''' : member of local list of all process descriptors in same cluster. 
+- '''copies_list''' : member of global list of all descriptors of same process.
+- '''children_list''' : member of global list of all children of same parent process.
+- '''children_root''' : root of global list of children process.
+- etc.
+
+All elements of a ''local'' list are in the same cluster, so ALMOS-MKH uses local pointers. The elements of a ''global'' list can be distributed on all clusters, so ALMOS-MKH uses extended pointers.
 
 == __2) Thread definition__ ==
@@ -59 +60 @@
 
 You can find below a partial list of information stored in a thread descriptor ([https://www-soc.lip6.fr/trac/almos-mkh/browser/trunk/kernel/kern/thread.h#L134 thread_t] in ALMOS-MKH):
- * '''TRDID''' : thread identifier
- * '''TYPE''' : KERNEL / USER / IDLE / RPC
- * '''FLAGS''' : bit_vector of thread attributes.
- * '''BLOCKED''' : bit_vector of blocking causes.
- * '''PROCESS''' : pointer on the local process descriptor 
- * '''SCHED''' : pointer on the scheduler in charge of this thread.
- * '''CORE''' : pointer on the owner processor core.
- * '''LOCKS_COUNT''' : current number of locks taken by this thread
- * '''CPU_CONTEXT''' : save the CPU registers when descheduled.
- * '''FPU_CONTEXT''' : save the FPU registers when descheduled.
- * '''XLIST''' : member of the global list of threads waiting on the same resource.
- * '''CHILDREN_ROOT''' : root of the global list of children threads.
- * '''CHILDREN_LIST''' : member of the global list of all children of same parent.
+ * '''trdid''' : thread identifier
+ * '''type''' : KERNEL / USER / IDLE / RPC
+ * '''flags''' : bit_vector of thread attributes.
+ * '''blocked''' : bit_vector of blocking causes.
+ * '''process''' : pointer on the local process descriptor
+ * '''parent''' : extended pointer on the parent thread descriptor. 
+ * '''sched''' : pointer on the scheduler in charge of this thread.
+ * '''core''' : pointer on the owner core descriptor.
+ * '''cpu_context''' : save the CPU registers when descheduled.
+ * '''fpu_context''' : save the FPU registers when descheduled.
+ * '''wait_xlist''' : member of a global list of threads waiting on the same resource.
+ * '''wait_list''' : member of a local list of threads waiting on the same resource.
+ * '''sched_list''' : member of the local list of threads running on the same core.
 - etc.