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2010-08-12Increase vheap counter to Uint64Björn-Egil Dahlberg
This will reduce the risk of integer wrapping in bin vheap counting. The vheap size series will now use the golden ratio instead of doubling and fibonacci sequences. OTP #8730
2010-08-12Fix wrapping in next vheap calculationBjörn-Egil Dahlberg
OTP #8730
2010-07-22Mending halfword heap emulatorSverker Eriksson
2010-07-20One off-heap list, to eliminate two words per ETS object.Sverker Eriksson
Merging the three off-heap lists (binaries, funs and externals) into one list. This reduces memory consumption by two words (pointers) per ETS object.
2010-06-03OTP-8555 Send message from NIFSverker Eriksson
New NIF features: Send messages from a NIF, or from thread created by NIF, to any local process (enif_send) Store terms between NIF calls (enif_alloc_env, enif_make_copy) Create binary terms with user defined memory management (enif_make_resource_binary)
2010-03-10Store pointers to heap data in 32-bit wordsPatrik Nyblom
Store Erlang terms in 32-bit entities on the heap, expanding the pointers to 64-bit when needed. This works because all terms are stored on addresses in the 32-bit address range (the 32 most significant bits of pointers to term data are always 0). Introduce a new datatype called UWord (along with its companion SWord), which is an integer having the exact same size as the machine word (a void *), but might be larger than Eterm/Uint. Store code as machine words, as the instructions are pointers to executable code which might reside outside the 32-bit address range. Continuation pointers are stored on the 32-bit stack and hence must point to addresses in the low range, which means that loaded beam code much be placed in the low 32-bit address range (but, as said earlier, the instructions themselves are full words). No Erlang term data can be stored on C stacks (enforced by an earlier commit). This version gives a prompt, but test cases still fail (and dump core). The loader (and emulator loop) has instruction packing disabled. The main issues has been in rewriting loader and actual virtual machine. Subsystems (like distribution) does not work yet.
2010-01-13Improve binary garbage collectionBjörn-Egil Dahlberg
The garbage collector in r13b03 is too aggressive in some cases. This commit raises the level of default initial allowed binary garbage (virtual heap for binaries) before collecting from 233 words to 46368 words (181 kB on 32-bit). A new option, min_bin_vheap_size, has been added to spawn_opt, system_flag and process_flag can be used to change the default values. The option can also be used with system_info and process_info to inspect the values. For symmetry the option min_heap_size has been added to the above functions where it was previously missing. Add testcases for min_bin_vheap_size and min_heap_size for functions process_flag/2, process_info/2, system_info/2 and spawn_opt/2.
2010-01-13OTP-8240 Improved GC performance after BIF/NIF call when a lot of heapSverker Eriksson
fragments was created. This will mainly benefit NIFs that return large compound terms.
2009-11-20The R13B03 release.OTP_R13B03Erlang/OTP