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view tests/test-merge-prompt.t @ 27430:e240e914d226 stable
revlog: seek to end of file before writing (issue4943)
Revlogs were recently refactored to open file handles in "a+" and use a
persistent file handle for reading and writing. This drastically
reduced the number of file handles being opened.
Unfortunately, it appears that some versions of Solaris lose the file
offset when performing a write after the handle has been seeked.
The simplest workaround is to seek to EOF on files opened in a+ mode
before writing to them, which is what this patch does.
Ideally, this code would exist in the vfs layer. However, this would
require creating a proxy class for file objects in order to provide a
custom implementation of write(). This would add overhead. Since
revlogs are the only files we open in a+ mode, the one-off workaround
in revlog.py should be sufficient.
This patch appears to have little to no impact on performance on my
Linux machine.
author | Gregory Szorc <gregory.szorc@gmail.com> |
---|---|
date | Thu, 17 Dec 2015 17:16:02 -0800 |
parents | 9ab18a912c44 |
children | 00209e38e7d9 |
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Test for b5605d88dc27: Make ui.prompt repeat on "unrecognized response" again (issue897) 840e2b315c1f: Fix misleading error and prompts during update/merge (issue556) $ status() { > echo "--- status ---" > hg st -A file1 file2 > for file in file1 file2; do > if [ -f $file ]; then > echo "--- $file ---" > cat $file > else > echo "*** $file does not exist" > fi > done > } $ hg init $ echo 1 > file1 $ echo 2 > file2 $ hg ci -Am 'added file1 and file2' adding file1 adding file2 $ hg rm file1 $ echo changed >> file2 $ hg ci -m 'removed file1, changed file2' $ hg co 0 2 files updated, 0 files merged, 0 files removed, 0 files unresolved $ echo changed >> file1 $ hg rm file2 $ hg ci -m 'changed file1, removed file2' created new head Non-interactive merge: $ hg merge -y local changed file1 which remote deleted use (c)hanged version or (d)elete? c remote changed file2 which local deleted use (c)hanged version or leave (d)eleted? c 1 files updated, 0 files merged, 0 files removed, 0 files unresolved (branch merge, don't forget to commit) $ status --- status --- M file2 C file1 --- file1 --- 1 changed --- file2 --- 2 changed Interactive merge: $ hg co -C 0 files updated, 0 files merged, 1 files removed, 0 files unresolved $ hg merge --config ui.interactive=true <<EOF > c > d > EOF local changed file1 which remote deleted use (c)hanged version or (d)elete? c remote changed file2 which local deleted use (c)hanged version or leave (d)eleted? d 0 files updated, 0 files merged, 0 files removed, 0 files unresolved (branch merge, don't forget to commit) $ status --- status --- file2: * (glob) C file1 --- file1 --- 1 changed *** file2 does not exist Interactive merge with bad input: $ hg co -C 0 files updated, 0 files merged, 0 files removed, 0 files unresolved $ hg merge --config ui.interactive=true <<EOF > foo > bar > d > baz > c > EOF local changed file1 which remote deleted use (c)hanged version or (d)elete? foo unrecognized response local changed file1 which remote deleted use (c)hanged version or (d)elete? bar unrecognized response local changed file1 which remote deleted use (c)hanged version or (d)elete? d remote changed file2 which local deleted use (c)hanged version or leave (d)eleted? baz unrecognized response remote changed file2 which local deleted use (c)hanged version or leave (d)eleted? c 1 files updated, 0 files merged, 1 files removed, 0 files unresolved (branch merge, don't forget to commit) $ status --- status --- M file2 R file1 *** file1 does not exist --- file2 --- 2 changed Interactive merge with not enough input: $ hg co -C 1 files updated, 0 files merged, 1 files removed, 0 files unresolved $ hg merge --config ui.interactive=true <<EOF > d > EOF local changed file1 which remote deleted use (c)hanged version or (d)elete? d remote changed file2 which local deleted use (c)hanged version or leave (d)eleted? abort: response expected [255] $ status --- status --- file2: * (glob) C file1 --- file1 --- 1 changed *** file2 does not exist