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The can_all_from_reach_with_flags method is used by ok_to_give_up in upload-pack.c to see if we have done enough negotiation during a fetch. This method is intentionally created to preserve state between calls to assist with stateful negotiation, such as over SSH. To make this method testable, add a new can_all_from_reach method that does the initial setup and final tear-down. We will later use this method in production code. Call the method from 'test-tool reach' for now. Since this is a many-to-many reachability query, add a new type of input to the 'test-tool reach' input format. Lines "Y:<committish>" create a list of commits to be the reachability targets from the commits in the 'X' list. In the context of fetch negotiation, the 'X' commits are the 'want' commits and the 'Y' commits are the 'have' commits. Signed-off-by: Derrick Stolee <dstolee@microsoft.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
79 lines
2.6 KiB
C
79 lines
2.6 KiB
C
#ifndef __COMMIT_REACH_H__
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#define __COMMIT_REACH_H__
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#include "commit-slab.h"
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struct commit;
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struct commit_list;
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struct contains_cache;
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struct ref_filter;
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struct commit_list *get_merge_bases_many(struct commit *one,
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int n,
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struct commit **twos);
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struct commit_list *get_merge_bases_many_dirty(struct commit *one,
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int n,
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struct commit **twos);
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struct commit_list *get_merge_bases(struct commit *one, struct commit *two);
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struct commit_list *get_octopus_merge_bases(struct commit_list *in);
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/* To be used only when object flags after this call no longer matter */
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struct commit_list *get_merge_bases_many_dirty(struct commit *one, int n, struct commit **twos);
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int is_descendant_of(struct commit *commit, struct commit_list *with_commit);
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int in_merge_bases_many(struct commit *commit, int nr_reference, struct commit **reference);
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int in_merge_bases(struct commit *commit, struct commit *reference);
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/*
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* Takes a list of commits and returns a new list where those
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* have been removed that can be reached from other commits in
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* the list. It is useful for, e.g., reducing the commits
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* randomly thrown at the git-merge command and removing
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* redundant commits that the user shouldn't have given to it.
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*
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* This function destroys the STALE bit of the commit objects'
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* flags.
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*/
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struct commit_list *reduce_heads(struct commit_list *heads);
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/*
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* Like `reduce_heads()`, except it replaces the list. Use this
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* instead of `foo = reduce_heads(foo);` to avoid memory leaks.
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*/
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void reduce_heads_replace(struct commit_list **heads);
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int ref_newer(const struct object_id *new_oid, const struct object_id *old_oid);
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/*
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* Unknown has to be "0" here, because that's the default value for
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* contains_cache slab entries that have not yet been assigned.
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*/
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enum contains_result {
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CONTAINS_UNKNOWN = 0,
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CONTAINS_NO,
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CONTAINS_YES
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};
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define_commit_slab(contains_cache, enum contains_result);
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int commit_contains(struct ref_filter *filter, struct commit *commit,
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struct commit_list *list, struct contains_cache *cache);
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int reachable(struct commit *from, unsigned int with_flag,
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unsigned int assign_flag, time_t min_commit_date);
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/*
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* Determine if every commit in 'from' can reach at least one commit
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* that is marked with 'with_flag'. As we traverse, use 'assign_flag'
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* as a marker for commits that are already visited. Do not walk
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* commits with date below 'min_commit_date'.
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*/
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int can_all_from_reach_with_flag(struct object_array *from,
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unsigned int with_flag,
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unsigned int assign_flag,
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time_t min_commit_date);
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int can_all_from_reach(struct commit_list *from, struct commit_list *to,
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int commit_date_cutoff);
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#endif
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