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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 19:33:14 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 19:33:14 +0000 |
commit | 36d22d82aa202bb199967e9512281e9a53db42c9 (patch) | |
tree | 105e8c98ddea1c1e4784a60a5a6410fa416be2de /devtools/shared/loader/DistinctSystemPrincipalLoader.sys.mjs | |
parent | Initial commit. (diff) | |
download | firefox-esr-upstream.tar.xz firefox-esr-upstream.zip |
Adding upstream version 115.7.0esr.upstream/115.7.0esrupstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'devtools/shared/loader/DistinctSystemPrincipalLoader.sys.mjs')
-rw-r--r-- | devtools/shared/loader/DistinctSystemPrincipalLoader.sys.mjs | 45 |
1 files changed, 45 insertions, 0 deletions
diff --git a/devtools/shared/loader/DistinctSystemPrincipalLoader.sys.mjs b/devtools/shared/loader/DistinctSystemPrincipalLoader.sys.mjs new file mode 100644 index 0000000000..06c33b8891 --- /dev/null +++ b/devtools/shared/loader/DistinctSystemPrincipalLoader.sys.mjs @@ -0,0 +1,45 @@ +/* This Source Code Form is subject to the terms of the Mozilla Public + * License, v. 2.0. If a copy of the MPL was not distributed with this + * file, You can obtain one at http://mozilla.org/MPL/2.0/. */ + +const { DevToolsLoader } = ChromeUtils.importESModule( + "resource://devtools/shared/loader/Loader.sys.mjs", + { + // `loadInDevToolsLoader` will import the loader in a special priviledged + // global created for DevTools, which will be reused as the shared global + // to load additional modules for the "DistinctSystemPrincipalLoader". + loadInDevToolsLoader: true, + } +); + +// When debugging system principal resources (JSMs, chrome documents, ...) +// We have to load DevTools actors in another system principal global. +// That's mostly because of spidermonkey's Debugger API which requires +// debuggee and debugger to be in distinct principals. +// +// We try to hold a single instance of this special loader via this API. +// +// @param requester object +// Object/instance which is using the loader. +// The same requester object should be passed to release method. +let systemLoader = null; +const systemLoaderRequesters = new Set(); + +export function useDistinctSystemPrincipalLoader(requester) { + if (!systemLoader) { + systemLoader = new DevToolsLoader({ + useDevToolsLoaderGlobal: true, + }); + systemLoaderRequesters.clear(); + } + systemLoaderRequesters.add(requester); + return systemLoader; +} + +export function releaseDistinctSystemPrincipalLoader(requester) { + systemLoaderRequesters.delete(requester); + if (systemLoaderRequesters.size == 0) { + systemLoader.destroy(); + systemLoader = null; + } +} |