diff options
Diffstat (limited to 'gdb/value.c')
| -rw-r--r-- | gdb/value.c | 36 |
1 files changed, 30 insertions, 6 deletions
diff --git a/gdb/value.c b/gdb/value.c index b0aa415..d02bc27 100644 --- a/gdb/value.c +++ b/gdb/value.c @@ -208,6 +208,9 @@ struct value used instead of read_memory to enable extra caching. */ unsigned int stack : 1; + /* If the value has been released. */ + unsigned int released : 1; + /* Location of value (if lval). */ union { @@ -1210,6 +1213,7 @@ value_free_to_mark (struct value *mark) for (val = all_values; val && val != mark; val = next) { next = val->next; + val->released = 1; value_free (val); } all_values = val; @@ -1228,6 +1232,7 @@ free_all_values (void) for (val = all_values; val; val = next) { next = val->next; + val->released = 1; value_free (val); } @@ -1260,6 +1265,7 @@ release_value (struct value *val) { all_values = val->next; val->next = NULL; + val->released = 1; return; } @@ -1269,11 +1275,26 @@ release_value (struct value *val) { v->next = val->next; val->next = NULL; + val->released = 1; break; } } } +/* If the value is not already released, release it. + If the value is already released, increment its reference count. + That is, this function ensures that the value is released from the + value chain and that the caller owns a reference to it. */ + +void +release_value_or_incref (struct value *val) +{ + if (val->released) + value_incref (val); + else + release_value (val); +} + /* Release all values up to mark */ struct value * value_release_to_mark (struct value *mark) @@ -1282,12 +1303,15 @@ value_release_to_mark (struct value *mark) struct value *next; for (val = next = all_values; next; next = next->next) - if (next->next == mark) - { - all_values = next->next; - next->next = NULL; - return val; - } + { + if (next->next == mark) + { + all_values = next->next; + next->next = NULL; + return val; + } + next->released = 1; + } all_values = 0; return val; } |