Line data Source code
1 : #ifndef HEADER_fd_src_disco_topo_fd_topob_h
2 : #define HEADER_fd_src_disco_topo_fd_topob_h
3 :
4 : /* fd_topob is a builder for fd_topo, providing many convenience
5 : functions for creating a useful topology. */
6 :
7 : #include "../../disco/topo/fd_topo.h"
8 : #include "fd_cpu_topo.h"
9 :
10 : /* A link in the topology is either unpolled or polled. Almost all
11 : links are polled, which means a tile which has this link as an in
12 : will read fragments from it and pass them to the tile handling
13 : code. An unpolled link will not read off the link by default and
14 : the user code will need to specifically read it as needed. */
15 :
16 0 : #define FD_TOPOB_UNPOLLED 0
17 0 : #define FD_TOPOB_POLLED 1
18 :
19 : /* A reliable link is a flow controlled one, where the producer will
20 : not send fragments if any downstream consumer does not have enough
21 : capacity (credits) to handle it. */
22 :
23 0 : #define FD_TOPOB_UNRELIABLE 0
24 0 : #define FD_TOPOB_RELIABLE 1
25 :
26 : FD_PROTOTYPES_BEGIN
27 :
28 : /* Initialize a new fd_topo_t with the given app name and at the memory address
29 : provided. Returns the topology at given address. The topology will be empty
30 : with no tiles, objects, links. */
31 :
32 : fd_topo_t *
33 : fd_topob_new( void * mem,
34 : char const * app_name );
35 :
36 : /* Add a workspace with the given name to the topology. Workspace names
37 : must be unique and adding the same workspace twice will produce an
38 : error. */
39 :
40 : fd_topo_wksp_t *
41 : fd_topob_wksp( fd_topo_t * topo,
42 : char const * name );
43 :
44 : /* Add an object with the given type to the toplogy. An object is
45 : something that takes up space in memory, in a workspace.
46 :
47 : The workspace must exist and have been added to the topology.
48 : Adding an object will cause it to occupt space in memory, but not
49 : be mapped into any tiles. If you wish the object to be readable or
50 : writable by a tile, you need to add a fd_topob_tile_uses relationship. */
51 :
52 : fd_topo_obj_t *
53 : fd_topob_obj( fd_topo_t * topo,
54 : char const * obj_type,
55 : char const * wksp_name );
56 :
57 : /* Same as fd_topo_obj, but labels the object. */
58 :
59 : fd_topo_obj_t *
60 : fd_topob_obj_named( fd_topo_t * topo,
61 : char const * obj_type,
62 : char const * wksp_name,
63 : char const * label );
64 :
65 : /* Add a relationship saying that a certain tile uses a given object.
66 : This has the effect that when memory mapping required workspaces
67 : for a tile, it will map the workspace required for this object in
68 : the appropriate mode.
69 :
70 : mode should be one of FD_SHMEM_JOIN_MODE_READ_ONLY or
71 : FD_SHMEM_JOIN_MODE_READ_WRITE. */
72 :
73 : void
74 : fd_topob_tile_uses( fd_topo_t * topo,
75 : fd_topo_tile_t * tile,
76 : fd_topo_obj_t const * obj,
77 : int mode );
78 :
79 : /* Add a link to the toplogy. The link will not have any producer or
80 : consumer(s) by default, and those need to be added after. The link
81 : can have no backing data buffer, a dcache, or a reassembly buffer
82 : behind it. */
83 :
84 : fd_topo_link_t *
85 : fd_topob_link( fd_topo_t * topo,
86 : char const * link_name,
87 : char const * wksp_name,
88 : ulong depth,
89 : ulong mtu,
90 : ulong burst );
91 :
92 : /* Add a tile to the topology. This creates various objects needed for
93 : a standard tile, including tile scratch memory, metrics memory and so
94 : on. These objects will be created and linked to the respective
95 : workspaces provided, and the tile will be specified to map those
96 : workspaces when it is attached. */
97 :
98 : fd_topo_tile_t *
99 : fd_topob_tile( fd_topo_t * topo,
100 : char const * tile_name,
101 : char const * tile_wksp,
102 : char const * metrics_wksp,
103 : ulong cpu_idx,
104 : int is_agave,
105 : int uses_id_keyswitch,
106 : int uses_av_keyswitch );
107 :
108 : /* Add an input link to the tile. If the tile is created with fd_stem,
109 : it will automatically poll the in link and forward fragments to the
110 : user code (unless the link is specified as unpolled).
111 :
112 : An input link has an fseq which is a ulong used for returning the
113 : current reader position in sequence space, used for wiring flow
114 : control to the producer. The producer will not produce fragments
115 : while any downstream consumer link is not ready to receive them,
116 : unless the link is marked as unreliable. */
117 :
118 : void
119 : fd_topob_tile_in( fd_topo_t * topo,
120 : char const * tile_name,
121 : ulong tile_kind_id,
122 : char const * fseq_wksp,
123 : char const * link_name,
124 : ulong link_kind_id,
125 : int reliable,
126 : int polled );
127 :
128 : /* Add an output link to the tile. This doesn't do much by itself,
129 : but will cause the link to get mapped in as writable for the tile,
130 : and the tile can later look up the link by name and write to it
131 : as it wants. */
132 :
133 : void
134 : fd_topob_tile_out( fd_topo_t * topo,
135 : char const * tile_name,
136 : ulong tile_kind_id,
137 : char const * link_name,
138 : ulong link_kind_id );
139 :
140 : /* Automatically layout the tiles onto CPUs in the topology for a
141 : best effort. fd_topob_auto_layout reads CPU topology from the OS.
142 : fd_topob_auto_layout_cpus takes a pre-built CPU topology, useful
143 : for testing. */
144 :
145 : void
146 : fd_topob_auto_layout( fd_topo_t * topo,
147 : int reserve_agave_cores );
148 :
149 : void
150 : fd_topob_auto_layout_cpus( fd_topo_t * topo,
151 : fd_topo_cpus_t * cpus,
152 : int reserve_agave_cores );
153 :
154 : /* Finish creating the topology. Lays out all the objects in the
155 : given workspaces, and sizes everything correctly. Also validates
156 : the topology before returning.
157 :
158 : This must be called to finish creating the topology. */
159 :
160 : void
161 : fd_topob_finish( fd_topo_t * topo,
162 : fd_topo_obj_callbacks_t ** callbacks );
163 :
164 : FD_PROTOTYPES_END
165 :
166 : #endif /* HEADER_fd_src_disco_topo_fd_topob_h */
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