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| author | Rickard Green <[email protected]> | 2016-08-29 17:52:10 +0200 |
|---|---|---|
| committer | Rickard Green <[email protected]> | 2016-08-29 17:52:10 +0200 |
| commit | 928d74ffa09bd56652d9390b02fa51ef51d71d51 (patch) | |
| tree | bfb9cd9e76d4ef766dbcd999adf16c700350b399 /erts/doc/src | |
| parent | 69d442f8afc67aef33c70d68d7eaab2bdad1400f (diff) | |
| parent | 9d0638216d35ca0f21c1eea20f8daa3992ac4f71 (diff) | |
| download | otp-928d74ffa09bd56652d9390b02fa51ef51d71d51.tar.gz otp-928d74ffa09bd56652d9390b02fa51ef51d71d51.tar.bz2 otp-928d74ffa09bd56652d9390b02fa51ef51d71d51.zip | |
Merge branch 'rickard/fun-purge-bug/OTP-13809' and 'rickard/new-purge-strategy/OTP-13833' into maint
* rickard/fun-purge-bug/OTP-13809:
Fix purge of code
Reclaim literal area after purge has completed
Separate literal area from code
Conflicts:
erts/doc/src/erlang.xml
erts/emulator/beam/beam_bif_load.c
erts/emulator/beam/erl_init.c
erts/preloaded/ebin/init.beam
Diffstat (limited to 'erts/doc/src')
| -rw-r--r-- | erts/doc/src/erlang.xml | 23 |
1 files changed, 23 insertions, 0 deletions
diff --git a/erts/doc/src/erlang.xml b/erts/doc/src/erlang.xml index 2b7a3b85e5..51ebddc155 100644 --- a/erts/doc/src/erlang.xml +++ b/erts/doc/src/erlang.xml @@ -776,6 +776,29 @@ Z = erlang:adler32_combine(X,Y,iolist_size(Data2)).</code> by passing option <c>{allow_gc, false}</c>.</p> </item> </taglist> + <note> + <p> + Up until ERTS version 8.*, the check process code operation + checks for all types of references to the old code. That is, + direct references (e.g. return addresses on the process + stack), indirect references (<c>fun</c>s in process + context), and references to literals in the code. + </p> + <p> + As of ERTS version 9.0, the check process code operation + only checks for direct references to the code. Indirect + references via <c>fun</c>s will be ignored. If such + <c>fun</c>s exist and are used after a purge of the old + code, an exception will be raised upon usage (same as + the case when the <c>fun</c> is received by the process + after the purge). Literals will be taken care of (copied) + at a later stage. This behavior can as of ERTS version + 8.1 be enabled when + <seealso marker="doc/installation_guide:INSTALL#Advanced-configuration-and-build-of-ErlangOTP_Configuring">building OTP</seealso>, + and will automatically be enabled if dirty scheduler + support is enabled. + </p> + </note> <p>See also <seealso marker="kernel:code"> <c>kernel:code(3)</c></seealso>.</p> <p>Failures:</p> |