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* iseq.h, iseq.c, compile.c: Change the line number data structure

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to solve an issue reported at [ruby-dev:44413] [Ruby 1.9 - Bug #5217].
  Before this fix, each instruction has an information including
  line number (iseq::iseq_insn_info_table).  Instead of this data
  structure, recording only line number changing places
  (iseq::iseq_line_info_table).
  The order of entries in iseq_line_info_table is ascending order of
  iseq_line_info_table_entry::position.  You can get a line number
  by an iseq and a program counter with this data structure.
  This fix reduces memory consumption of iseq (bytecode).
  On my measurement, a rails application consumes 21.8MB for
  iseq with this fix on the 32bit CPU.  Without this fix, it
  consumes 24.7MB for iseq [ruby-dev:44415].
* proc.c: ditto.
* vm_insnhelper.c: ditto.
* vm_method.c: ditto.
* vm.c (rb_vm_get_sourceline): change to use rb_iseq_line_no().



git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@33046 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
This commit is contained in:
ko1 2011-08-24 06:31:15 +00:00
parent 4f03f0cb67
commit 7049d9c80d
9 changed files with 110 additions and 84 deletions
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4
vm_core.h
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@ -176,8 +176,8 @@ struct rb_iseq_struct {
unsigned short line_no;
/* insn info, must be freed */
struct iseq_insn_info_entry *insn_info_table;
size_t insn_info_size;
struct iseq_line_info_entry *line_info_table;
size_t line_info_size;
ID *local_table; /* must free */
int local_table_size;