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* core, core/state, trie: EIP158, reprice & skip empty account writeJeffrey Wilcke2016-11-131-1/+1
| | | | | | | | | | | | | | | This commit implements EIP158 part 1, 2, 3 & 4 1. If an account is empty it's no longer written to the trie. An empty account is defined as (balance=0, nonce=0, storage=0, code=0). 2. Delete an empty account if it's touched 3. An empty account is redefined as either non-existent or empty. 4. Zero value calls and zero value suicides no longer consume the 25k reation costs. params: moved core/config to params Signed-off-by: Jeffrey Wilcke <jeffrey@ethereum.org>
* light: light chain, VM env and tx poolZsolt Felfoldi2016-11-091-32/+18
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* core/state: implement reverts by journaling all changesFelix Lange2016-10-061-9/+5
| | | | | | | | | | This commit replaces the deep-copy based state revert mechanism with a linear complexity journal. This commit also hides several internal StateDB methods to limit the number of ways in which calling code can use the journal incorrectly. As usual consultation and bug fixes to the initial implementation were provided by @karalabe, @obscuren and @Arachnid. Thank you!
* cmd, core, internal, light, tests: avoid hashing the code in the VMPéter Szilágyi2016-10-011-1/+2
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* core, trie: replace state caches with trie journalFelix Lange2016-09-281-4/+0
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* core/state: track all accounts in canon stateFelix Lange2016-09-261-1/+1
| | | | | This change introduces a global, per-state cache that keeps account data in the canon state. Thanks to @karalabe for lots of fixes.
* light: implemented odr-capable trie and state structureszsfelfoldi2015-12-171-0/+269