authorgravatar for leroycepearson@geemili.xyzLeRoyce Pearson <leroycepearson@geemili.xyz> 2020-03-23 23:20:17-06:00
committergravatar for leroycepearson@geemili.xyzLeRoyce Pearson <leroycepearson@geemili.xyz> 2020-03-23 23:20:17-06:00
log1a6c3aeec9226eba02655c77872bd01eaa9be711
tree098a278796aed924e760ff6df08ddb1b667f2f09
parent8bec1304c35585ceacfbda3696d8af854c7ab08a

Block until file is unlocked on windows

1 files changed, 36 insertions(+), 26 deletions(-)

lib/std/os/windows.zig+36-26
...@@ -137,32 +137,42 @@ pub fn OpenFileW(...@@ -137,32 +137,42 @@ pub fn OpenFileW(
137 };137 };
138 var io: IO_STATUS_BLOCK = undefined;138 var io: IO_STATUS_BLOCK = undefined;
139 const share_access = share_access_opt orelse FILE_SHARE_WRITE | FILE_SHARE_READ | FILE_SHARE_DELETE;139 const share_access = share_access_opt orelse FILE_SHARE_WRITE | FILE_SHARE_READ | FILE_SHARE_DELETE;
140 const rc = ntdll.NtCreateFile(140
141 &result,141 var delay: usize = 1;
142 access_mask,142 while (true) {
143 &attr,143 const rc = ntdll.NtCreateFile(
144 &io,144 &result,
145 null,145 access_mask,
146 FILE_ATTRIBUTE_NORMAL,146 &attr,
147 share_access,147 &io,
148 creation,148 null,
149 FILE_NON_DIRECTORY_FILE | FILE_SYNCHRONOUS_IO_NONALERT,149 FILE_ATTRIBUTE_NORMAL,
150 null,150 share_access,
151 0,151 creation,
152 );152 FILE_NON_DIRECTORY_FILE | FILE_SYNCHRONOUS_IO_NONALERT,
153 switch (rc) {153 null,
154 .SUCCESS => return result,154 0,
155 .OBJECT_NAME_INVALID => unreachable,155 );
156 .OBJECT_NAME_NOT_FOUND => return error.FileNotFound,156 switch (rc) {
157 .OBJECT_PATH_NOT_FOUND => return error.FileNotFound,157 .SUCCESS => return result,
158 .NO_MEDIA_IN_DEVICE => return error.NoDevice,158 .OBJECT_NAME_INVALID => unreachable,
159 .INVALID_PARAMETER => unreachable,159 .OBJECT_NAME_NOT_FOUND => return error.FileNotFound,
160 .SHARING_VIOLATION => return error.SharingViolation,160 .OBJECT_PATH_NOT_FOUND => return error.FileNotFound,
161 .ACCESS_DENIED => return error.AccessDenied,161 .NO_MEDIA_IN_DEVICE => return error.NoDevice,
162 .PIPE_BUSY => return error.PipeBusy,162 .INVALID_PARAMETER => unreachable,
163 .OBJECT_PATH_SYNTAX_BAD => unreachable,163 .SHARING_VIOLATION => {
164 .OBJECT_NAME_COLLISION => return error.PathAlreadyExists,164 std.time.sleep(delay);
165 else => return unexpectedStatus(rc),165 if (delay < 1 * std.time.ns_per_s) {
166 delay *= 2;
167 }
168 continue; // TODO: don't loop for async
169 },
170 .ACCESS_DENIED => return error.AccessDenied,
171 .PIPE_BUSY => return error.PipeBusy,
172 .OBJECT_PATH_SYNTAX_BAD => unreachable,
173 .OBJECT_NAME_COLLISION => return error.PathAlreadyExists,
174 else => return unexpectedStatus(rc),
175 }
166 }176 }
167}177}
168178