RosettaCodeData/Task/Priority-queue/COBOL/priority-queue.cobol

287 lines
9.3 KiB
COBOL

PROCESS NOSEQ,DS(S),AR(E),TEST(SO),CP(1047)
IDENTIFICATION DIVISION.
PROGRAM-ID. PTYQTEST
ENVIRONMENT DIVISION.
CONFIGURATION SECTION.
* UNCOMMENT WITH DEBUGGING CLAUSE FOR DEBUG LINES TO EXECUTE.
SOURCE-COMPUTER.
Z-SYSTEM
* WITH DEBUGGING MODE
.
DATA DIVISION.
WORKING-STORAGE SECTION.
01 PTYQ-PGMNAMES.
05 PTYQPUSH PIC X(8) VALUE "PTYQPUSH".
05 PTYQPOP PIC X(8) VALUE "PTYQPOP".
01 TASK-PTR POINTER.
01 TOP-PTR POINTER.
01 LINK-KEY PIC S9(8) COMP-5.
01 HEAP-PTR POINTER VALUE NULL.
01 PUSHD-PTR POINTER VALUE NULL.
01 POPPD-PTR POINTER VALUE NULL.
LINKAGE SECTION.
01 TASK.
05 TASK-NODE.
10 TASK-KEY PIC S9(8) COMP-5.
10 TASK-NEXT POINTER.
10 TASK-DOWN POINTER.
05 TASK-NAME PIC X(40).
PROCEDURE DIVISION.
ALLOCATE TASK RETURNING TASK-PTR
MOVE "EAT SCONES." TO TASK-NAME
MOVE +6 TO LINK-KEY
CALL PTYQPUSH USING TASK-PTR, LINK-KEY, HEAP-PTR, PUSHD-PTR
SET HEAP-PTR TO PUSHD-PTR
ALLOCATE TASK RETURNING TASK-PTR
MOVE "CLEAR DRAINS." TO TASK-NAME
MOVE +3 TO LINK-KEY
CALL PTYQPUSH USING TASK-PTR, LINK-KEY, HEAP-PTR, PUSHD-PTR
SET HEAP-PTR TO PUSHD-PTR
ALLOCATE TASK RETURNING TASK-PTR
MOVE "FEED CAT." TO TASK-NAME
MOVE +4 TO LINK-KEY
CALL PTYQPUSH USING TASK-PTR, LINK-KEY, HEAP-PTR, PUSHD-PTR
SET HEAP-PTR TO PUSHD-PTR
ALLOCATE TASK RETURNING TASK-PTR
MOVE "MAKE TEA." TO TASK-NAME
MOVE +5 TO LINK-KEY
CALL PTYQPUSH USING TASK-PTR, LINK-KEY, HEAP-PTR, PUSHD-PTR
SET HEAP-PTR TO PUSHD-PTR
ALLOCATE TASK RETURNING TASK-PTR
MOVE "SOLVE RC TASKS." TO TASK-NAME
MOVE +1 TO LINK-KEY
CALL PTYQPUSH USING TASK-PTR, LINK-KEY, HEAP-PTR, PUSHD-PTR
SET HEAP-PTR TO PUSHD-PTR
ALLOCATE TASK RETURNING TASK-PTR
MOVE "TAX RETURN." TO TASK-NAME
MOVE +2 TO LINK-KEY
CALL PTYQPUSH USING TASK-PTR, LINK-KEY, HEAP-PTR, PUSHD-PTR
SET HEAP-PTR TO PUSHD-PTR
PERFORM WITH TEST BEFORE UNTIL HEAP-PTR = NULL
SET TOP-PTR TO HEAP-PTR
SET ADDRESS OF TASK TO TOP-PTR
DISPLAY TASK-KEY " " TASK-NAME
CALL PTYQPOP USING HEAP-PTR, POPPD-PTR
SET HEAP-PTR TO POPPD-PTR
FREE TOP-PTR
END-PERFORM
GOBACK.
END PROGRAM PTYQTEST.
PROCESS NOSEQ,DS(S),AR(E),TEST(SO),CP(1047)
IDENTIFICATION DIVISION.
PROGRAM-ID. PTYQMERG RECURSIVE.
ENVIRONMENT DIVISION.
CONFIGURATION SECTION.
* UNCOMMENT WITH DEBUGGING CLAUSE FOR DEBUG LINES TO EXECUTE.
SOURCE-COMPUTER.
Z-SYSTEM
* WITH DEBUGGING MODE
.
DATA DIVISION.
LINKAGE SECTION.
01 HEAP-PTRA POINTER.
01 HEAP-PTRB POINTER.
01 MERGD-PTR POINTER.
01 HEAPA.
05 HEAPA-KEY PIC S9(8) COMP-5 VALUE +0.
05 HEAPA-NEXT POINTER.
05 HEAPA-DOWN POINTER.
01 HEAPB.
05 HEAPB-KEY PIC S9(8) COMP-5 VALUE +0.
05 HEAPB-NEXT POINTER.
05 HEAPB-DOWN POINTER.
PROCEDURE DIVISION USING HEAP-PTRA, HEAP-PTRB, MERGD-PTR.
EVALUATE TRUE
WHEN HEAP-PTRA = NULL
SET MERGD-PTR TO HEAP-PTRB
WHEN HEAP-PTRB = NULL
SET MERGD-PTR TO HEAP-PTRA
WHEN OTHER
SET ADDRESS OF HEAPA TO HEAP-PTRA
SET ADDRESS OF HEAPB TO HEAP-PTRB
IF HEAPA-KEY < HEAPB-KEY
IF HEAPA-DOWN NOT = NULL
SET HEAPB-NEXT TO HEAPA-DOWN
END-IF
SET HEAPA-DOWN TO HEAP-PTRB
SET MERGD-PTR TO HEAP-PTRA
ELSE
IF HEAPB-DOWN NOT = NULL
SET HEAPA-NEXT TO HEAPB-DOWN
END-IF
SET HEAPB-DOWN TO HEAP-PTRA
SET MERGD-PTR TO HEAP-PTRB
END-IF
END-EVALUATE
GOBACK.
END PROGRAM PTYQMERG.
PROCESS NOSEQ,DS(S),AR(E),TEST(SO),CP(1047)
IDENTIFICATION DIVISION.
PROGRAM-ID. PTYQ2PMG RECURSIVE.
ENVIRONMENT DIVISION.
CONFIGURATION SECTION.
* UNCOMMENT WITH DEBUGGING CLAUSE FOR DEBUG LINES TO EXECUTE.
SOURCE-COMPUTER.
Z-SYSTEM
* WITH DEBUGGING MODE
.
DATA DIVISION.
WORKING-STORAGE SECTION.
01 PGMQMERG PIC X(8) VALUE "PTYQMERG".
01 PGMQ2PMG PIC X(8) VALUE "PTYQ2PMG".
LOCAL-STORAGE SECTION.
01 HEAP-PTRA POINTER.
01 HEAP-PTRB POINTER.
01 HEAP-REST POINTER.
01 MERG1-PTR POINTER.
01 MERG2-PTR POINTER.
LINKAGE SECTION.
01 HEAP-PTR POINTER.
01 MERGD-PTR POINTER.
01 HEAP.
05 HEAP-KEY PIC S9(8) COMP-5 VALUE +0.
05 HEAP-NEXT POINTER.
05 HEAP-DOWN POINTER.
01 HEAPA.
05 HEAPA-KEY PIC S9(8) COMP-5 VALUE +0.
05 HEAPA-NEXT POINTER.
05 HEAPA-DOWN POINTER.
01 HEAPB.
05 HEAPB-KEY PIC S9(8) COMP-5 VALUE +0.
05 HEAPB-NEXT POINTER.
05 HEAPB-DOWN POINTER.
01 REST.
05 REST-KEY PIC S9(8) COMP-5 VALUE +0.
05 REST-NEXT POINTER.
05 REST-DOWN POINTER.
PROCEDURE DIVISION USING HEAP-PTR, MERGD-PTR.
SET ADDRESS OF HEAP TO HEAP-PTR
EVALUATE TRUE
WHEN HEAP-PTR = NULL
SET MERGD-PTR TO HEAP-PTR
WHEN HEAP-NEXT = NULL
SET MERGD-PTR TO HEAP-PTR
WHEN OTHER
SET HEAP-PTRA TO HEAP-PTR
SET ADDRESS OF HEAPA TO HEAP-PTRA
SET HEAP-PTRB TO HEAP-NEXT
SET ADDRESS OF HEAPB TO HEAP-PTRB
SET HEAP-REST TO HEAPB-NEXT
SET ADDRESS OF REST TO HEAP-REST
SET HEAPA-NEXT TO NULL
SET HEAPB-NEXT TO NULL
CALL PGMQMERG USING HEAP-PTRA, HEAP-PTRB, MERG1-PTR
CALL PGMQ2PMG USING HEAP-REST, MERG2-PTR
CALL PGMQMERG USING MERG1-PTR, MERG2-PTR, MERGD-PTR
END-EVALUATE
GOBACK.
END PROGRAM PTYQ2PMG.
PROCESS NOSEQ,DS(S),AR(E),TEST(SO),CP(1047)
IDENTIFICATION DIVISION.
PROGRAM-ID. PTYQPUSH RECURSIVE.
ENVIRONMENT DIVISION.
CONFIGURATION SECTION.
* UNCOMMENT WITH DEBUGGING CLAUSE FOR DEBUG LINES TO EXECUTE.
SOURCE-COMPUTER.
Z-SYSTEM
* WITH DEBUGGING MODE
.
DATA DIVISION.
WORKING-STORAGE SECTION.
01 PTYQMERG PIC X(8) VALUE "PTYQMERG".
LINKAGE SECTION.
01 NODE-PTR POINTER.
01 LINK-KEY PIC S9(8) COMP-5.
01 HEAP-PTR POINTER.
01 PUSHD-PTR POINTER.
01 HEAP.
05 HEAP-KEY PIC S9(8) COMP-5.
05 HEAP-NEXT POINTER.
05 HEAP-DOWN POINTER.
01 NODE.
05 NODE-KEY PIC S9(8) COMP-5.
05 NODE-NEXT POINTER.
05 NODE-DOWN POINTER.
PROCEDURE DIVISION USING NODE-PTR, LINK-KEY, HEAP-PTR, PUSHD-PTR.
SET ADDRESS OF NODE TO NODE-PTR
SET ADDRESS OF HEAP TO HEAP-PTR
SET NODE-NEXT TO NULL
SET NODE-DOWN TO NULL
MOVE LINK-KEY TO NODE-KEY
CALL PTYQMERG USING NODE-PTR, HEAP-PTR, PUSHD-PTR
GOBACK.
END PROGRAM PTY2PUSH.
PROCESS NOSEQ,DS(S),AR(E),TEST(SO),CP(1047)
IDENTIFICATION DIVISION.
PROGRAM-ID. PTYQPOP RECURSIVE.
ENVIRONMENT DIVISION.
CONFIGURATION SECTION.
* UNCOMMENT WITH DEBUGGING CLAUSE FOR DEBUG LINES TO EXECUTE.
SOURCE-COMPUTER.
Z-SYSTEM
* WITH DEBUGGING MODE
.
DATA DIVISION.
WORKING-STORAGE SECTION.
01 PTYQ2PMG PIC X(8) VALUE "PTYQ2PMG".
LINKAGE SECTION.
01 HEAP-PTR POINTER.
01 POPPD-PTR POINTER.
01 HEAP.
05 HEAP-KEY PIC S9(8) COMP-5 VALUE +0.
05 HEAP-NEXT POINTER.
05 HEAP-DOWN POINTER.
PROCEDURE DIVISION USING HEAP-PTR, POPPD-PTR.
SET ADDRESS OF HEAP TO HEAP-PTR
CALL PTYQ2PMG USING HEAP-DOWN, POPPD-PTR
GOBACK.
END PROGRAM PTYQPOP.