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v.vcache: fix a panic due to a race on creating folders in ~/.vmodules/cache/XY

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Delyan Angelov 2023-01-30 19:00:00 +02:00
parent 9c78e3c289
commit 62f7e56a18
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GPG Key ID: 66886C0F12D595ED
1 changed files with 7 additions and 1 deletions
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8
vlib/v/vcache/vcache.v
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@ -89,7 +89,13 @@ pub fn (mut cm CacheManager) key2cpath(key string) string {
cprefix_folder := os.join_path(cm.basepath, prefix) cprefix_folder := os.join_path(cm.basepath, prefix)
cpath = os.join_path(cprefix_folder, khash) cpath = os.join_path(cprefix_folder, khash)
if !os.is_dir(cprefix_folder) { if !os.is_dir(cprefix_folder) {
os.mkdir_all(cprefix_folder) or { panic(err) } os.mkdir_all(cprefix_folder) or {
// The error here may be due to a race with another independent V process, that has already created the same folder.
// If that is the case, so be it - just reuse the folder ¯\_(ツ)_/¯ ...
if !os.is_dir(cprefix_folder) {
panic(err)
}
}
} }
dlog(@FN, 'new hk') dlog(@FN, 'new hk')
dlog(@FN, ' key: ${key}') dlog(@FN, ' key: ${key}')