{"action":"opened","issue":{"url":"https://api.github.com/repos/jvm-profiling-tools/async-profiler/issues/110","repository_url":"https://api.github.com/repos/jvm-profiling-tools/async-profiler","labels_url":"https://api.github.com/repos/jvm-profiling-tools/async-profiler/issues/110/labels{/name}","comments_url":"https://api.github.com/repos/jvm-profiling-tools/async-profiler/issues/110/comments","events_url":"https://api.github.com/repos/jvm-profiling-tools/async-profiler/issues/110/events","html_url":"https://github.com/jvm-profiling-tools/async-profiler/issues/110","id":316667716,"number":110,"title":"why the non-Java frames preceding the Java frames not show ?","user":{"login":"ygdyang","id":6197540,"avatar_url":"https://avatars1.githubusercontent.com/u/6197540?v=4","gravatar_id":"","url":"https://api.github.com/users/ygdyang","html_url":"https://github.com/ygdyang","followers_url":"https://api.github.com/users/ygdyang/followers","following_url":"https://api.github.com/users/ygdyang/following{/other_user}","gists_url":"https://api.github.com/users/ygdyang/gists{/gist_id}","starred_url":"https://api.github.com/users/ygdyang/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/ygdyang/subscriptions","organizations_url":"https://api.github.com/users/ygdyang/orgs","repos_url":"https://api.github.com/users/ygdyang/repos","events_url":"https://api.github.com/users/ygdyang/events{/privacy}","received_events_url":"https://api.github.com/users/ygdyang/received_events","type":"User","site_admin":false},"labels":[],"state":"open","locked":false,"assignee":null,"assignees":[],"milestone":null,"comments":0,"created_at":"2018-04-23T05:38:32Z","updated_at":"2018-04-23T05:38:32Z","closed_at":null,"author_association":"NONE","body":"I have read the \"Restrictions/Limitations\" in readme, it said that \"You will not see the non-Java frames preceding the Java frames on the stack\". \r\nI am curious about that，why this frame is not showed. I have read the function \"getCallChain\" in perfEvents_linux.cpp, It use PerfEvent to get the native stack, while the \"perf-map-agent\"  tool (https://github.com/jvm-profiling-tools/perf-map-agent) which based on perf can show these frames(such as start_threa, JavaMain, ...) .\r\n"}}
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