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Diff for /src/usr.bin/make/gnode.h between version 1.32 and 1.33

version 1.32, 2019/12/21 15:29:59 version 1.33, 2019/12/21 15:31:54
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 #include <assert.h>  #include <assert.h>
   
 /*-  /*-
  * The structure for an individual graph node. Each node has several   * The structure for an individual graph node. Each node has a lot of
  * pieces of data associated with it.   * of data associated with it.
  *      1) the name of the target it describes   *      1) the *name*of the target it describes (at end because ohash)
  *      2) the location of the target file in the file system.   *      2) the *path* to the target file
  *      3) the type of operator used to define its sources (cf parse.c)   *      3) the *type* of operator used to define its sources
  *      4) whether it is involved in this invocation of make   *              (cf parse.c, mostly : :: !  but...)
  *      5) whether the target has been rebuilt   *      4) *must_make*: whether it is involved in this invocation of make
  *      6) whether any of its children has been rebuilt   *      5) *built_status*: has the target been rebuilt/is up-to-date...
  *      7) the number of its children that are, as yet, not built   *      6) *child_rebuild*: at least one of its children has been rebuilt
  *      8) its modification time   *      7) *children_left*: number of children still to consider
  *      9) the modification time of its youngest child (qv. make.c)   *      8) *mtime*: node's modification time
  *      10) a list of nodes for which this is a source   *      9) *youngest*: youngest child (cf make.c)
  *      11) a list of nodes on which this depends   *      10) *parents*: list of nodes for which this is a dependency
  *      12) a list of nodes that depend on this, as gleaned from the   *      11) *children*: list of nodes on which this depends
  *          transformation rules.   *      12) *cohorts*: list of nodes of the same name created by the :: operator
  *      13) a list of nodes of the same name created by the :: operator   *      13) *predecessors*: list of nodes, result of .ORDER:
  *      14) a list of predecessors nodes, result of .ORDER:  
  *          if considered for building, they should be built before this node.   *          if considered for building, they should be built before this node.
  *      15) a list of successors nodes, result of .ORDER:   *      14) *successors*: list of nodes, result of .ORDER:
  *          if considered for building, they should be built after this node.   *          if considered for building, they should be built after this node.
  *      16) a Lst of ``local'' variables that are specific to this target   *      15) *localvars*: ``local'' variables specific to this target
  *         and this target only (qv. var.c [$@ $< $?, etc.])   *         and this target only (cf var.c [$@ $< $?, etc.])
  *      17) a Lst of strings that are commands to be given to a shell   *      16) *commands*: the actual LIST of strings to pass to the shell
  *         to create this target.   *         to create this target.
  */   */
   
 #define SPECIAL_NONE    0U  #define SPECIAL_NONE            0U
 #define SPECIAL_PATH            21U  #define SPECIAL_PATH            21U
 #define SPECIAL_MASK            63U  #define SPECIAL_MASK            63U
 #define SPECIAL_TARGET          64U  #define SPECIAL_TARGET          64U
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 #define SPECIAL_EXPENSIVE       33U  #define SPECIAL_EXPENSIVE       33U
   
 struct GNode_ {  struct GNode_ {
     unsigned int special_op;    /* special op to apply */      unsigned int type;          /* node type (see the OP flags, below) */
     unsigned char special;      /* type of special node */      unsigned int special_op;    /* special op to apply (only used in parse.c) */
       unsigned char special;      /* type of special node or SPECIAL_NONE */
     bool must_make;             /* true if this target needs building */      bool must_make;             /* true if this target needs building */
     bool child_rebuilt;         /* true if at least one child was rebuilt,      bool child_rebuilt;         /* true if at least one child was rebuilt,
                                  * thus triggering timestamps changes */                                   * thus triggering timestamps changes */
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                                  * making an inferior */                                   * making an inferior */
 #define NOSUCHNODE      6       /* error from run_gnode */  #define NOSUCHNODE      6       /* error from run_gnode */
 #define HELDBACK        7       /* Another target in the same group is  #define HELDBACK        7       /* Another target in the same group is
                                  * currently building, avoid race conditions */                                   * currently building, avoid race conditions
                                    * Only used in the parallel engine make.c */
   
     char *path;         /* The full pathname of the file */      char *path;         /* full pathname of the file */
     unsigned int type;  /* Its type (see the OP flags, below) */      int order;          /* wait weight (see .ORDER/predecessors/successors) */
     int order;          /* Its wait weight */  
   
     int children_left;  /* The number of children left to build */      int children_left;  /* number of children left to build */
     int in_cycle;       /* cycle detection */  
   
     struct timespec mtime;      /* Node's modification time */      struct timespec mtime;      /* Node's modification time */
     GNode *youngest;            /* Node's youngest child */      GNode *youngest;            /* Node's youngest child */
   
     GNode *impliedsrc;      GNode *impliedsrc;  /* found by suff, to help with localvars */
     LIST cohorts;       /* Other nodes for the :: operator */      LIST cohorts;       /* Other nodes for the :: operator */
     LIST parents;       /* Nodes that depend on this one */      LIST parents;       /* Nodes that depend on this one */
     LIST children;      /* Nodes on which this one depends */      LIST children;      /* Nodes on which this one depends */
     LIST predecessors;      LIST predecessors;
     LIST successors;      LIST successors;
   
     SymTable context;   /* The local variables */      SymTable localvars;
     LIST commands;      /* Creation commands */      LIST commands;      /* Creation commands */
     Suff *suffix;       /* Suffix for the node (determined by      Suff *suffix;       /* Suffix for the node (determined by
                          * Suff_FindDeps and opaque to everyone                           * Suff_FindDeps and opaque to everyone
                          * but the Suff module) */                           * but the Suff module) */
     GNode *sibling;     /* equivalent targets */      GNode *groupling;   /* target lists, for HELDBACK: do not build two
     GNode *groupling;   /* target lists */                           * at the same time */
     GNode *watched;     /* the node currently building */      GNode *watched;     /* the node currently building for HELDBACK */
     /* stuff for target name equivalence */  
                           /* stuff for target name equivalence: */
       GNode *sibling;     /* equivalent targets (not complete yet) */
     char *basename;     /* pointer to name stripped of path */      char *basename;     /* pointer to name stripped of path */
     GNode *next;      GNode *next;
   
       bool in_cycle;      /* cycle detection */
     char name[1];       /* The target's name */      char name[1];       /* The target's name */
 };  };
   
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