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| author | Sverker Eriksson <[email protected]> | 2016-04-12 20:41:58 +0200 |
|---|---|---|
| committer | Sverker Eriksson <[email protected]> | 2016-04-15 19:02:49 +0200 |
| commit | 85a6623152988c267cea008d20616b61ea9c223c (patch) | |
| tree | c83b93cb1ca5e3f396c62bd4cb7f723d97c9221e /erts/emulator/sys/common/erl_mseg.h | |
| parent | 90641d82a4b07e6b0be142d07ac85107b8ebee9d (diff) | |
| download | otp-85a6623152988c267cea008d20616b61ea9c223c.tar.gz otp-85a6623152988c267cea008d20616b61ea9c223c.tar.bz2 otp-85a6623152988c267cea008d20616b61ea9c223c.zip | |
erts: Add 'exec_alloc' for hipe code
that uses its own super carrier (erts_exec_mmapper)
to guarantee low addressed and executable memory (PROT_EXEC).
Currently only used on x86_64 that needs low memory
for HiPE/AMD64's small code model.
By initializing erts_exec_mapper early we secure
its low memory area before erts_literal_mmapper might
steal it.
Diffstat (limited to 'erts/emulator/sys/common/erl_mseg.h')
| -rw-r--r-- | erts/emulator/sys/common/erl_mseg.h | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/erts/emulator/sys/common/erl_mseg.h b/erts/emulator/sys/common/erl_mseg.h index 2acd8f8505..556a135798 100644 --- a/erts/emulator/sys/common/erl_mseg.h +++ b/erts/emulator/sys/common/erl_mseg.h @@ -61,6 +61,7 @@ typedef struct { Uint nos; ErtsMMapInit dflt_mmap; ErtsMMapInit literal_mmap; + ErtsMMapInit exec_mmap; } ErtsMsegInit_t; #define ERTS_MSEG_INIT_DEFAULT_INITIALIZER \ @@ -70,7 +71,8 @@ typedef struct { 10, /* mcs: Max cache size */ \ 1000, /* cci: Cache check interval */ \ ERTS_MMAP_INIT_DEFAULT_INITER, \ - ERTS_MMAP_INIT_LITERAL_INITER \ + ERTS_MMAP_INIT_LITERAL_INITER, \ + ERTS_MMAP_INIT_HIPE_EXEC_INITER \ } typedef struct { |