Oops, commited a test version of this file by accident. Revert.
This commit is contained in:
Tom Lane
parent
393f313227
commit
fc8e6c7746
@ -8,7 +8,7 @@
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*
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*
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* IDENTIFICATION
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* $Header: /cvsroot/pgsql/src/backend/storage/buffer/bufmgr.c,v 1.74 2000/02/21 18:47:03 tgl Exp $
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* $Header: /cvsroot/pgsql/src/backend/storage/buffer/bufmgr.c,v 1.75 2000/02/21 18:49:00 tgl Exp $
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*
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*-------------------------------------------------------------------------
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*/
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@ -453,7 +453,6 @@ BufferAlloc(Relation reln,
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*/
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Assert(buf->refcount == 0);
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buf->refcount = 1;
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Assert(PrivateRefCount[BufferDescriptorGetBuffer(buf) - 1] == 0);
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PrivateRefCount[BufferDescriptorGetBuffer(buf) - 1] = 1;
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if (buf->flags & BM_DIRTY)
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@ -543,7 +542,6 @@ BufferAlloc(Relation reln,
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inProgress = FALSE;
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buf->flags &= ~BM_IO_IN_PROGRESS;
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TerminateBufferIO(buf);
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Assert(PrivateRefCount[BufferDescriptorGetBuffer(buf)-1] == 1);
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PrivateRefCount[BufferDescriptorGetBuffer(buf) - 1] = 0;
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buf->refcount--;
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buf = (BufferDesc *) NULL;
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@ -570,7 +568,6 @@ BufferAlloc(Relation reln,
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{
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TerminateBufferIO(buf);
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/* give up the buffer since we don't need it any more */
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Assert(PrivateRefCount[BufferDescriptorGetBuffer(buf)-1] == 1);
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PrivateRefCount[BufferDescriptorGetBuffer(buf) - 1] = 0;
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Assert(buf->refcount > 0);
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buf->refcount--;
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@ -1472,16 +1469,8 @@ ReleaseRelationBuffers(Relation rel)
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if (!(buf->flags & BM_FREE))
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{
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/* Assert checks that buffer will actually get freed! */
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Assert(buf->refcount == 1);
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if (PrivateRefCount[i - 1] <= 0)
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{
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fprintf(stderr, "Nonpositive PrivateRefCount on buffer for %s\n",
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RelationGetRelationName(rel));
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fflush(stderr);
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* ((char *) 0) = 0;
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abort();
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}
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Assert(PrivateRefCount[i - 1] == 1);
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Assert(PrivateRefCount[i - 1] == 1 &&
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buf->refcount == 1);
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/* ReleaseBuffer expects we do not hold the lock at entry */
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SpinRelease(BufMgrLock);
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holding = false;
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@ -3,23 +3,22 @@
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* is for IP V4 CIDR notation, but prepared for V6: just
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* add the necessary bits where the comments indicate.
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*
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* $Header: /cvsroot/pgsql/src/backend/utils/adt/network.c,v 1.17 2000/02/21 18:47:07 tgl Exp $
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*
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* $Id: network.c,v 1.18 2000/02/21 18:49:54 tgl Exp $
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* Jon Postel RIP 16 Oct 1998
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*/
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#include "postgres.h"
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#include <sys/types.h>
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#include <sys/socket.h>
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#include <errno.h>
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#include <netinet/in.h>
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#include <arpa/inet.h>
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#include "postgres.h"
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#include "utils/builtins.h"
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static int v4bitncmp(unsigned long a1, unsigned long a2, int bits);
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static int v4bitncmp(unsigned int a1, unsigned int a2, int bits);
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/*
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* Access macros. Add IPV6 support.
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@ -40,7 +39,6 @@ static int v4bitncmp(unsigned long a1, unsigned long a2, int bits);
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#define ip_v4addr(inetptr) \
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(((inet_struct *)VARDATA(inetptr))->addr.ipv4_addr)
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/* Common input routine */
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static inet *
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network_in(char *src, int type)
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@ -129,8 +127,7 @@ cidr_out(inet *src)
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}
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/*
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* Boolean tests for ordering operators --- must agree with sorting
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* operator network_cmp().
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* Boolean tests for magnitude. Add V4/V6 testing!
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*/
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bool
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@ -138,7 +135,19 @@ network_lt(inet *a1, inet *a2)
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{
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if (!PointerIsValid(a1) || !PointerIsValid(a2))
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return FALSE;
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return (bool) (network_cmp(a1, a2) < 0);
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if ((ip_family(a1) == AF_INET) && (ip_family(a2) == AF_INET))
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{
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int order = v4bitncmp(ip_v4addr(a1), ip_v4addr(a2), ip_bits(a2));
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return ((order < 0) || ((order == 0) && (ip_bits(a1) < ip_bits(a2))));
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}
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else
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{
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/* Go for an IPV6 address here, before faulting out: */
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elog(ERROR, "cannot compare address families %d and %d",
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ip_family(a1), ip_family(a2));
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return FALSE;
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}
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}
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bool
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@ -146,7 +155,7 @@ network_le(inet *a1, inet *a2)
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{
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if (!PointerIsValid(a1) || !PointerIsValid(a2))
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return FALSE;
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return (bool) (network_cmp(a1, a2) <= 0);
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return (network_lt(a1, a2) || network_eq(a1, a2));
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}
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bool
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@ -154,7 +163,18 @@ network_eq(inet *a1, inet *a2)
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{
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if (!PointerIsValid(a1) || !PointerIsValid(a2))
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return FALSE;
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return (bool) (network_cmp(a1, a2) == 0);
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if ((ip_family(a1) == AF_INET) && (ip_family(a2) == AF_INET))
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{
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return ((ip_bits(a1) == ip_bits(a2))
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&& (v4bitncmp(ip_v4addr(a1), ip_v4addr(a2), ip_bits(a1)) == 0));
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}
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else
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{
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/* Go for an IPV6 address here, before faulting out: */
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elog(ERROR, "cannot compare address families %d and %d",
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ip_family(a1), ip_family(a2));
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return FALSE;
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}
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}
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bool
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@ -162,7 +182,7 @@ network_ge(inet *a1, inet *a2)
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{
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if (!PointerIsValid(a1) || !PointerIsValid(a2))
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return FALSE;
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return (bool) (network_cmp(a1, a2) >= 0);
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return (network_gt(a1, a2) || network_eq(a1, a2));
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}
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bool
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@ -170,7 +190,19 @@ network_gt(inet *a1, inet *a2)
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{
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if (!PointerIsValid(a1) || !PointerIsValid(a2))
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return FALSE;
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return (bool) (network_cmp(a1, a2) > 0);
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if ((ip_family(a1) == AF_INET) && (ip_family(a2) == AF_INET))
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{
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int order = v4bitncmp(ip_v4addr(a1), ip_v4addr(a2), ip_bits(a2));
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return ((order > 0) || ((order == 0) && (ip_bits(a1) > ip_bits(a2))));
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}
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else
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{
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/* Go for an IPV6 address here, before faulting out: */
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elog(ERROR, "cannot compare address families %d and %d",
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ip_family(a1), ip_family(a2));
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return FALSE;
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}
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}
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bool
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@ -178,34 +210,7 @@ network_ne(inet *a1, inet *a2)
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{
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if (!PointerIsValid(a1) || !PointerIsValid(a2))
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return FALSE;
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return (bool) (network_cmp(a1, a2) != 0);
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}
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/*
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* Comparison function for sorting. Add V4/V6 testing!
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*/
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int4
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network_cmp(inet *a1, inet *a2)
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{
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if ((ip_family(a1) == AF_INET) && (ip_family(a2) == AF_INET))
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{
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int order = v4bitncmp(ip_v4addr(a1), ip_v4addr(a2),
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(ip_bits(a1) < ip_bits(a2)) ?
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ip_bits(a1) : ip_bits(a2));
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if (order)
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return order;
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/* They agree in the first N bits, so shorter one comes first */
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return (int) ip_bits(a1) - (int) ip_bits(a2);
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}
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else
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{
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/* Go for an IPV6 address here, before faulting out: */
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elog(ERROR, "cannot compare address families %d and %d",
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ip_family(a1), ip_family(a2));
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return 0;
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}
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return (!network_eq(a1, a2));
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}
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bool
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@ -288,6 +293,28 @@ network_supeq(inet *a1, inet *a2)
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}
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}
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/*
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* Comparison function for sorting. Add V4/V6 testing!
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*/
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int4
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network_cmp(inet *a1, inet *a2)
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{
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if (ntohl(ip_v4addr(a1)) < ntohl(ip_v4addr(a2)))
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return (-1);
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if (ntohl(ip_v4addr(a1)) > ntohl(ip_v4addr(a2)))
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return (1);
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if (ip_bits(a1) < ip_bits(a2))
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return (-1);
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if (ip_bits(a1) > ip_bits(a2))
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return (1);
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return 0;
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}
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text *
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network_host(inet *ip)
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{
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@ -449,7 +476,7 @@ network_netmask(inet *ip)
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*/
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static int
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v4bitncmp(unsigned long a1, unsigned long a2, int bits)
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v4bitncmp(unsigned int a1, unsigned int a2, int bits)
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{
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unsigned long mask = 0;
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int i;
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@ -458,11 +485,9 @@ v4bitncmp(unsigned long a1, unsigned long a2, int bits)
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mask = (mask >> 1) | 0x80000000;
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a1 = ntohl(a1);
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a2 = ntohl(a2);
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a1 &= mask;
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a2 &= mask;
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if (a1 < a2)
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if ((a1 & mask) < (a2 & mask))
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return (-1);
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else if (a1 > a2)
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else if ((a1 & mask) > (a2 & mask))
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return (1);
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return (0);
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}
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