push for trnman review

(lockmanager still fails unit tests)


BitKeeper/deleted/.del-Makefile.am~4375ae3d4de2bdf0:
  Delete: unittest/maria/Makefile.am
configure.in:
  silence up configure warnings, don't generate unittest/maria/Makefile
include/atomic/nolock.h:
  s/LOCK/LOCK_prefix/
include/atomic/x86-gcc.h:
  s/LOCK/LOCK_prefix/
include/atomic/x86-msvc.h:
  s/LOCK/LOCK_prefix/
include/lf.h:
  pin asserts, renames
include/my_atomic.h:
  move cleanup
include/my_bit.h:
  s/uint/uint32/
mysys/lf_dynarray.c:
  style fixes, split for() in two, remove if()s
mysys/lf_hash.c:
  renames, minor fixes
mysys/my_atomic.c:
  run-time assert -> compile-time assert
storage/maria/Makefile.am:
  lockman here
storage/maria/unittest/Makefile.am:
  new unit tests
storage/maria/unittest/trnman-t.c:
  lots of changes
storage/maria/lockman.c:
  many changes:
  second meaning of "blocker"
  portability: s/gettimeofday/my_getsystime/
  move mutex/cond out of LOCK_OWNER - it creates a race condition
  that will be fixed in a separate changeset
  increment lm->count for every element, not only for distinct ones -
  because we cannot decrease it for distinct elements only :(
storage/maria/lockman.h:
  move mutex/cond out of LOCK_OWNER
storage/maria/trnman.c:
  move mutex/cond out of LOCK_OWNER
  atomic-ops to access short_trid_to_trn[]
storage/maria/trnman.h:
  move mutex/cond out of LOCK_OWNER
storage/maria/unittest/lockman-t.c:
  unit stress test

1 files changed, 48 insertions, 0 deletions

diff --git a/storage/maria/trnman.h b/storage/maria/trnman.h
new file mode 100644
index 00000000000..9470678f3b2
--- /dev/null
+++ b/storage/maria/trnman.h
@@ -0,0 +1,48 @@
+/* Copyright (C) 2000 MySQL AB
+
+   This program is free software; you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 2 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program; if not, write to the Free Software
+   Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA */
+
+#ifndef _trnman_h
+#define _trnman_h
+
+#include "lockman.h"
+
+typedef uint64 TrID; /* our TrID is 6 bytes */
+typedef struct st_transaction TRN;
+
+struct st_transaction
+{
+  LOCK_OWNER           locks;
+  LF_PINS             *pins;
+  TrID                 trid, min_read_from, commit_trid;
+  TRN                 *next, *prev;
+  /* Note! if locks.loid is 0, trn is NOT initialized */
+};
+
+#define SHORT_TRID_MAX 65535
+
+extern uint trnman_active_transactions, trnman_allocated_transactions;
+
+int trnman_init(void);
+int trnman_destroy(void);
+TRN *trnman_new_trn(pthread_mutex_t *mutex, pthread_cond_t *cond);
+void trnman_end_trn(TRN *trn, my_bool commit);
+#define trnman_commit_trn(T) trnman_end_trn(T, TRUE)
+#define trnman_abort_trn(T)  trnman_end_trn(T, FALSE)
+void trnman_free_trn(TRN *trn);
+my_bool trnman_can_read_from(TRN *trn, TrID trid);
+
+#endif
+